📚 Document: category-reference
📖 Related: Client Documentation | Category Reference | Changelog

Category Field Reference

This document describes the category_fields available for each category that supports structured vehicle/equipment data. For general API usage (authentication, endpoints, workflow), see the Client Documentation.

For the most up-to-date field definitions and valid enum values, open the relevant POST endpoint (e.g. POST /v4/car) in the Swagger UI and click the Schema tab next to "Example Value".

Registered Vehicle — Common Fields

The following fields are shared by all registered vehicle categories (Car, Transport, Motorcycle, Moped, Snowmobile, ATV, Camper, Caravan, Trailer). Each category section below lists only its category-specific fields — these common fields are always available in addition.

Only model_year is required. On POST, either registration_number or vin must be provided.

Field	Type	Description
`body_type`	string	Body type slug (e.g. `"sedan"`, `"suv"`). Validated against available values filtered by vehicle type.
`brand`	string	Brand slug (e.g. `"volvo"`, `"bmw"`). Validated against available values.
`model`	string	Model slug. For cars, validated against brand's model list; other types accept free text.
`model_type`	string	Trim or variant (free text), e.g. `"T5"`, `"GTI"`.
`model_year`	integer	Required. Manufacturing year (1900–2100).
`in_traffic_date`	string	Date when the vehicle was first registered in traffic. Format: `YYYY-MM-DD`.
`registration_number`	string	Swedish registration number (max 6 characters), e.g. `"ABC123"`. Required on `POST` if `vin` is not provided. Cannot be changed after creation.
`vin`	string	Vehicle Identification Number (17–19 characters). Required on `POST` if `registration_number` is not provided.
`color`	string	Vehicle color (free text), e.g. `"black"`, `"silver metallic"`.
`is_vat_deductible`	boolean	Whether the vehicle price is VAT deductible.
`registration_number_hidden`	boolean	Hide the registration number from the public ad listing.
`equipments`	array of strings	Equipment list. One item per element — do not use commas within items.
`salesperson`	string (email)	Salesperson email address. Validated against the dealer's registered salespersons in Blocket Admin. Send `null` or `""` to unset.
`warranty`	string	Warranty information (max 500 characters).
`return_policy`	string	Return policy information (max 500 characters).
`service_history`	string	Service history information (max 500 characters).
`product_declaration`	string (URL)	URL to product declaration document.
`home_delivery`	string	Home delivery information (max 500 characters).

Car (1020)

In addition to the common registered vehicle fields, Car supports the following category-specific fields. All category-specific fields are optional.

body_type is validated against available car body types. brand and model are validated against available car brands and models. Fields marked (V4) are only available on V4 endpoints — V3 rejects them.

Field	Type	Description
`condition.mileage`	object	Mileage, e.g. `{"unit": "km", "value": 50000}`. Units: `km`, `mil`. Once set, mileage cannot change between zero and non-zero (new/used status is permanently locked at creation).
`condition.is_new_vehicle`	boolean	Whether the vehicle is new. Derived from mileage if not provided. Cannot be changed once set.
`condition.number_of_owners`	integer	(V4) Number of previous owners. `0` (or null) is only valid for new vehicles; used vehicles require at least 1.
`condition.wheels`	array	Wheel sets (max 2). Each wheel: `name` (`summer`, `winter`, `winter_studded`), `tires` (4 positions: `front_left`, `front_right`, `rear_left`, `rear_right` with thread depth), `rim_size`. Required if `vehicle_ratings` is provided.
`condition.vehicle_ratings`	array	Condition ratings (max 5). Names: `exterior`, `interior` (values: `very_good`, `good`, `approved`, `poor`), `engine`, `brakes`, `equipment` (values: `good`, `minor_deviation`, `greater_deviation`). Required if `wheels` is provided.
`powertrain.transmission`	string	Transmission type: `manual`, `automatic`, `sequential`.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 250}`. Units: `hp`, `kw`.
`powertrain.fuels`	array of strings	Fuel types (multiple allowed): `gasoline`, `diesel`, `electric`, `ethanol`, `natural_gas`. Case insensitive.
`powertrain.drive_type`	string	Drive system: `fwd`, `rwd`, `awd`. Case insensitive.
`powertrain.displacement`	object	(V4) Engine displacement, e.g. `{"unit": "cc", "value": 1969}`. Units: `cc`, `l`.
`powertrain.environmental.fuel_consumption`	object	(V4) Fuel consumption, e.g. `{"unit": "l/100km", "value": 6.5}`.
`powertrain.environmental.fuel_consumption_standard`	string	(V4) Measurement standard slug, e.g. `"wltp"`. Validated against available values.
`powertrain.environmental.energy_consumption`	object	(V4) Energy consumption, e.g. `{"unit": "kWh/100km", "value": 18.3}`.
`powertrain.environmental.energy_consumption_standard`	string	(V4) Measurement standard slug, e.g. `"wltp"`. Validated against available values.
`powertrain.environmental.co2_emission`	object	(V4) CO2 emission, e.g. `{"unit": "g/km", "value": 189}`.
`powertrain.environmental.driving_range`	object	(V4) Driving range, e.g. `{"unit": "km", "value": 450}`.
`powertrain.environmental.battery_capacity`	object	(V4) Battery capacity, e.g. `{"unit": "kwh", "value": 75.5}`.
`physics.number_of_seats`	integer	(V4) Number of seats.
`physics.number_of_doors`	integer	(V4) Number of doors.
`physics.boot_size`	object	(V4) Boot/cargo volume, e.g. `{"unit": "l", "value": 480}`. Units: `m3`, `l`.
`physics.max_trailer_weight`	object	(V4) Max trailer weight, e.g. `{"unit": "kg", "value": 2400}`. Units: `g`, `kg`, `t`.
`physics.gross_weight`	object	(V4.4) Gross weight (total weight), e.g. `{"unit": "kg", "value": 2400}`. Units: `g`, `kg`, `t`.
`physics.curb_weight`	object	(V4.4) Curb weight (weight without load), e.g. `{"unit": "kg", "value": 1850}`. Units: `g`, `kg`, `t`.
`color_group`	string	(V4) Exterior color group slug. Validated against available values.
`interior_color`	string	(V4) Interior color as free text.
`has_damages`	boolean	(V4) Whether the vehicle has damages.
`damages_details`	string	(V4) Description of damages.
`has_repairs`	boolean	(V4) Whether the vehicle has been repaired.
`repairs_details`	string	(V4) Description of repairs.
`has_been_tuned`	boolean	(V4) Whether the vehicle has been tuned.
`tuning_details`	string	(V4) Description of tuning.
`has_liabilities`	boolean	(V4) Whether the vehicle has outstanding liabilities.
`liabilities_details`	string	(V4) Description of liabilities.
`eu_check_last`	string	(V4) Date of last EU inspection (`YYYY-MM-DD`).
`eu_check_next`	string	(V4) Date of next EU inspection (`YYYY-MM-DD`).
`online_purchasable`	boolean	Mark the vehicle as purchasable online. Requires DCB product activation for the dealer. Incompatible with leasing prices.
`leasing_details.mileage_remaining`	integer	(V4.4) Remaining mileage on the leasing contract, in Swedish mil. Requires the ad to have a `leasing` price.
`leasing_details.remaining_months`	integer	(V4.4) Remaining months on the leasing contract.
`leasing_details.initial_payment`	integer	(V4.4) Initial down payment in SEK.

Example (POST /v4/car):

{
  "source_id": "car-001",
  "dealer_code": "YOUR_CODE",
  "body": "Well-maintained Volvo XC60 with low mileage",
  "price": [{"type": "list", "amount": 350000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "body_type": "suv",
    "brand": "volvo",
    "model": "xc60",
    "model_type": "T6 AWD",
    "model_year": 2022,
    "registration_number": "ABC123",
    "color": "black",
    "condition": {
      "mileage": {"unit": "km", "value": 35000},
      "is_new_vehicle": false,
      "number_of_owners": 2
    },
    "powertrain": {
      "transmission": "automatic",
      "power": {"unit": "hp", "value": 310},
      "fuels": ["gasoline"],
      "drive_type": "awd",
      "displacement": {"unit": "cc", "value": 1969},
      "environmental": {
        "fuel_consumption": {"unit": "l/100km", "value": 8.3},
        "fuel_consumption_standard": "wltp",
        "co2_emission": {"unit": "g/km", "value": 189},
        "driving_range": {"unit": "km", "value": 55},
        "battery_capacity": {"unit": "kwh", "value": 18.8}
      }
    },
    "physics": {
      "number_of_seats": 5,
      "number_of_doors": 5,
      "boot_size": {"unit": "l", "value": 468},
      "max_trailer_weight": {"unit": "kg", "value": 2400},
      "gross_weight": {"unit": "kg", "value": 2400},
      "curb_weight": {"unit": "kg", "value": 1850}
    },
    "color_group": "black",
    "has_damages": false,
    "eu_check_last": "2025-03-20",
    "eu_check_next": "2026-03-20",
    "equipments": ["GPS", "Heated seats", "Panoramic roof", "ACC"]
  }
}

Transport (1021)

In addition to the common registered vehicle fields, Transport supports the following category-specific fields. All category-specific fields are optional.

body_type is validated against available transport vehicle body types. color_group and powertrain.environmental.fuel_consumption_standard / energy_consumption_standard are validated against available values. Fields marked (V4) are only available on V4 endpoints — V3 rejects them.

Field	Type	Description
`condition.mileage`	object	Mileage, e.g. `{"unit": "km", "value": 80000}`. Units: `km`, `mil`. New/used status is permanently locked at creation (same as Car).
`condition.is_new_vehicle`	boolean	Whether the vehicle is new. Derived from mileage if not provided. Cannot be changed once set.
`condition.number_of_owners`	integer	(V4) Number of previous owners. `0` (or null) is only valid for new vehicles; used vehicles require at least 1.
`condition.wheels`	array	Wheel sets (max 2). Same structure as Car. Required if `vehicle_ratings` is provided.
`condition.vehicle_ratings`	array	Condition ratings (max 5). Same structure as Car. Required if `wheels` is provided.
`powertrain.transmission`	string	Transmission type: `manual`, `automatic`, `sequential`.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 190}`. Units: `hp`, `kw`.
`powertrain.fuels`	array of strings	Fuel types: `gasoline`, `diesel`, `electric`, `ethanol`, `natural_gas`. Case insensitive.
`powertrain.torque`	object	Engine torque, e.g. `{"unit": "nm", "value": 400}`. Units: `nm`, `lb-ft`.
`powertrain.drive_type`	string	Drive system: `fwd`, `rwd`, `awd`. Case insensitive.
`powertrain.displacement`	object	(V4) Engine displacement, e.g. `{"unit": "cc", "value": 2998}`. Units: `cc`, `l`.
`powertrain.environmental.fuel_consumption`	object	(V4) Fuel consumption, e.g. `{"unit": "l/100km", "value": 8.5}`.
`powertrain.environmental.fuel_consumption_standard`	string	(V4) Measurement standard slug, e.g. `"wltp"`. Validated against available values.
`powertrain.environmental.energy_consumption`	object	(V4) Energy consumption, e.g. `{"unit": "kWh/100km", "value": 18.3}`.
`powertrain.environmental.energy_consumption_standard`	string	(V4) Measurement standard slug, e.g. `"wltp"`. Validated against available values.
`powertrain.environmental.co2_emission`	object	(V4) CO2 emission, e.g. `{"unit": "g/km", "value": 224}`.
`powertrain.environmental.driving_range`	object	(V4) Driving range, e.g. `{"unit": "km", "value": 450}`.
`powertrain.environmental.battery_capacity`	object	(V4) Battery capacity, e.g. `{"unit": "kwh", "value": 75.5}`.
`physics.gross_weight`	object	Gross vehicle weight, e.g. `{"unit": "kg", "value": 3500}`. Units: `g`, `kg`, `t`.
`physics.length`	object	Overall length, e.g. `{"unit": "m", "value": 6.0}`. Units: `mm`, `cm`, `m`.
`physics.cargo`	object	Cargo dimensions. Nested object with `length`, `width`, `height` — each a length unit object (units: `mm`, `cm`, `m`).
`physics.number_of_seats`	integer	(V4) Number of seats.
`physics.number_of_doors`	integer	(V4) Number of doors.
`physics.boot_size`	object	(V4) Boot/cargo area volume, e.g. `{"unit": "l", "value": 480}`. Units: `l`, `m3`.
`physics.max_trailer_weight`	object	(V4) Maximum trailer weight, e.g. `{"unit": "kg", "value": 3500}`. Units: `g`, `kg`, `t`.
`color_group`	string	(V4) Exterior color group slug. Validated against available values.
`interior_color`	string	(V4) Interior color as free text.
`has_damages`	boolean	(V4) Whether the vehicle has damages.
`damages_details`	string	(V4) Description of damages.
`has_repairs`	boolean	(V4) Whether the vehicle has been repaired.
`repairs_details`	string	(V4) Description of repairs.
`has_been_tuned`	boolean	(V4) Whether the vehicle has been tuned.
`tuning_details`	string	(V4) Description of tuning.
`has_liabilities`	boolean	(V4) Whether the vehicle has outstanding liabilities.
`liabilities_details`	string	(V4) Description of liabilities.
`eu_check_last`	string	(V4) Date of last inspection (`YYYY-MM-DD`).
`eu_check_next`	string	(V4) Date of next required inspection (`YYYY-MM-DD`).
`online_purchasable`	boolean	Mark as purchasable online. Requires DCB product activation. Incompatible with leasing prices.

Example (POST /v4/transport):

{
  "source_id": "transport-001",
  "dealer_code": "YOUR_CODE",
  "body": "Versatile Mercedes Sprinter for commercial use",
  "price": [{"type": "list", "amount": 280000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "body_type": "van",
    "brand": "mercedes-benz",
    "model": "sprinter",
    "model_year": 2021,
    "registration_number": "TRN123",
    "color_group": "white",
    "condition": {
      "mileage": {"unit": "km", "value": 45000},
      "is_new_vehicle": false,
      "number_of_owners": 1
    },
    "powertrain": {
      "transmission": "automatic",
      "power": {"unit": "hp", "value": 190},
      "fuels": ["diesel"],
      "torque": {"unit": "nm", "value": 440},
      "drive_type": "rwd",
      "displacement": {"unit": "cc", "value": 2143},
      "environmental": {
        "fuel_consumption": {"unit": "l/100km", "value": 8.5},
        "fuel_consumption_standard": "wltp",
        "co2_emission": {"unit": "g/km", "value": 224}
      }
    },
    "physics": {
      "gross_weight": {"unit": "kg", "value": 3500},
      "length": {"unit": "m", "value": 6.9},
      "number_of_seats": 3,
      "max_trailer_weight": {"unit": "kg", "value": 2500},
      "cargo": {
        "length": {"unit": "m", "value": 4.3},
        "width": {"unit": "m", "value": 1.8},
        "height": {"unit": "m", "value": 1.9}
      }
    },
    "has_damages": false,
    "has_repairs": false,
    "has_been_tuned": false,
    "has_liabilities": false,
    "eu_check_last": "2025-12-01",
    "eu_check_next": "2026-12-01",
    "equipments": ["Reversing camera", "Partition wall", "Load securing rails"]
  }
}

Motorcycle (1140)

In addition to the common registered vehicle fields, Motorcycle supports the following category-specific fields. All category-specific fields are optional.

body_type is validated against available motorcycle body types.

Field	Type	Description
`condition.mileage`	object	Mileage, e.g. `{"unit": "km", "value": 12000}`. Units: `km`, `mil`. Status change between new/used is allowed.
`condition.is_new_vehicle`	boolean	Whether the vehicle is new. Derived from mileage if not provided.
`condition.number_of_owners`	integer	(V4.3) Number of previous owners. `0` (or null) is only valid for new vehicles; used vehicles require at least 1.
`condition.engine_runtime`	object	Engine runtime, e.g. `{"unit": "hour", "value": 350}`. Units: `hour`, `min`.
`powertrain.transmission`	string	Transmission type: `manual`, `automatic`, `sequential`.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 150}`. Units: `hp`, `kw`.
`powertrain.fuels`	array of strings	Fuel types: `gasoline`, `diesel`, `electric`, `ethanol`, `natural_gas`. Case insensitive.
`powertrain.displacement`	object	Engine displacement, e.g. `{"unit": "cc", "value": 998}`. Units: `cc`, `l`.
`powertrain.engine_type`	string	Engine configuration: `unknown`, `single`, `flat-twin`, `parallel-twin`, `inline-2`, `v-twin`, `inline-3`, `flat-4`, `inline-4`, `v-4`, `flat-6`, `inline-6`, `v-twin-8`.

Example (POST /v4/motorcycle):

{
  "source_id": "mc-001",
  "dealer_code": "YOUR_CODE",
  "body": "Low-mileage Ducati Panigale in excellent condition",
  "price": [{"type": "list", "amount": 185000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "body_type": "sport",
    "brand": "ducati",
    "model": "panigale-v4",
    "model_year": 2022,
    "registration_number": "MCY123",
    "color": "red",
    "condition": {
      "mileage": {"unit": "km", "value": 5200},
      "is_new_vehicle": false,
      "engine_runtime": {"unit": "hour", "value": 120},
      "number_of_owners": 1
    },
    "powertrain": {
      "transmission": "sequential",
      "power": {"unit": "hp", "value": 214},
      "fuels": ["gasoline"],
      "displacement": {"unit": "cc", "value": 1103},
      "engine_type": "v-4"
    },
    "equipments": ["Quick shifter", "Traction control", "Riding modes"]
  }
}

Moped (1121)

In addition to the common registered vehicle fields, Moped supports the following category-specific fields. All category-specific fields are optional.

body_type is validated against available moped body types (defaults to "moped").

Field	Type	Description
`condition.mileage`	object	Mileage, e.g. `{"unit": "km", "value": 5000}`. Units: `km`, `mil`. Status change between new/used is allowed.
`condition.is_new_vehicle`	boolean	Whether the vehicle is new. Derived from mileage if not provided.
`condition.number_of_owners`	integer	(V4.3) Number of previous owners. `0` (or null) is only valid for new vehicles; used vehicles require at least 1.
`condition.engine_runtime`	object	Engine runtime, e.g. `{"unit": "hour", "value": 200}`. Units: `hour`, `min`.
`powertrain.transmission`	string	Transmission type: `manual`, `automatic`, `sequential`.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 5}`. Units: `hp`, `kw`.
`powertrain.fuels`	array of strings	Fuel types: `gasoline`, `diesel`, `electric`, `ethanol`, `natural_gas`. Case insensitive.
`physics.curb_weight`	object	(V4.4) Curb weight (weight without load), e.g. `{"unit": "kg", "value": 85}`. Units: `g`, `kg`, `t`.

Example (POST /v4/moped):

{
  "source_id": "moped-001",
  "dealer_code": "YOUR_CODE",
  "body": "Excellent condition Yamaha moped",
  "price": [{"type": "list", "amount": 35000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "body_type": "moped",
    "brand": "yamaha",
    "model": "aerox",
    "model_year": 2020,
    "registration_number": "ABC123",
    "condition": {
      "mileage": {"unit": "km", "value": 5000},
      "is_new_vehicle": false,
      "number_of_owners": 1
    },
    "powertrain": {
      "transmission": "automatic",
      "fuels": ["gasoline"]
    }
  }
}

Snowmobile (1180)

In addition to the common registered vehicle fields, Snowmobile supports the following category-specific fields. All category-specific fields are optional.

body_type defaults to "snowmobile" and is validated against available values.

Field	Type	Description
`condition.mileage`	object	Mileage, e.g. `{"unit": "km", "value": 8000}`. Units: `km`, `mil`. Status change between new/used is allowed.
`condition.is_new_vehicle`	boolean	Whether the vehicle is new. Derived from mileage if not provided.
`condition.number_of_owners`	integer	(V4.3) Number of previous owners. `0` (or null) is only valid for new vehicles; used vehicles require at least 1.
`condition.engine_runtime`	object	Engine runtime, e.g. `{"unit": "hour", "value": 400}`. Units: `hour`, `min`.
`powertrain.transmission`	string	Transmission type: `manual`, `automatic`, `sequential`.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 200}`. Units: `hp`, `kw`.
`powertrain.fuels`	array of strings	Fuel types: `gasoline`, `diesel`, `electric`, `ethanol`, `natural_gas`. Case insensitive.
`powertrain.displacement`	object	Engine displacement, e.g. `{"unit": "cc", "value": 850}`. Units: `cc`, `l`.
`physics.curb_weight`	object	(V4.4) Curb weight (weight without load), e.g. `{"unit": "kg", "value": 250}`. Units: `g`, `kg`, `t`.

Example (POST /v4/snowmobile):

{
  "source_id": "snowmobile-001",
  "dealer_code": "YOUR_CODE",
  "body": "Powerful Ski-Doo Summit for mountain riding",
  "price": [{"type": "list", "amount": 120000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "body_type": "snowmobile",
    "brand": "ski-doo",
    "model": "summit",
    "model_year": 2023,
    "registration_number": "SNO123",
    "condition": {
      "mileage": {"unit": "km", "value": 3500},
      "is_new_vehicle": false,
      "engine_runtime": {"unit": "hour", "value": 200},
      "number_of_owners": 1
    },
    "powertrain": {
      "transmission": "automatic",
      "power": {"unit": "hp", "value": 165},
      "fuels": ["gasoline"],
      "displacement": {"unit": "cc", "value": 850}
    },
    "equipments": ["Electric start", "Heated grips", "Reverse"]
  }
}

ATV (1143)

In addition to the common registered vehicle fields, ATV supports the following category-specific fields. All category-specific fields are optional.

body_type defaults to "atv".

Field	Type	Description
`condition.mileage`	object	Mileage, e.g. `{"unit": "km", "value": 6000}`. Units: `km`, `mil`. Status change between new/used is allowed.
`condition.is_new_vehicle`	boolean	Whether the vehicle is new. Derived from mileage if not provided.
`condition.number_of_owners`	integer	(V4.3) Number of previous owners. `0` (or null) is only valid for new vehicles; used vehicles require at least 1.
`condition.engine_runtime`	object	Engine runtime, e.g. `{"unit": "hour", "value": 300}`. Units: `hour`, `min`.
`powertrain.transmission`	string	Transmission type: `manual`, `automatic`, `sequential`.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 90}`. Units: `hp`, `kw`.
`powertrain.fuels`	array of strings	Fuel types: `gasoline`, `diesel`, `electric`, `ethanol`, `natural_gas`. Case insensitive.
`powertrain.displacement`	object	Engine displacement, e.g. `{"unit": "cc", "value": 686}`. Units: `cc`, `l`.
`physics.curb_weight`	object	(V4.4) Curb weight (weight without load), e.g. `{"unit": "kg", "value": 300}`. Units: `g`, `kg`, `t`.

Example (POST /v4/atv):

{
  "source_id": "atv-001",
  "dealer_code": "YOUR_CODE",
  "body": "Versatile Can-Am Outlander for work and trail",
  "price": [{"type": "list", "amount": 95000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "body_type": "atv",
    "brand": "can-am",
    "model": "outlander",
    "model_year": 2021,
    "registration_number": "ATV123",
    "condition": {
      "mileage": {"unit": "km", "value": 4500},
      "is_new_vehicle": false,
      "engine_runtime": {"unit": "hour", "value": 250},
      "number_of_owners": 1
    },
    "powertrain": {
      "transmission": "automatic",
      "power": {"unit": "hp", "value": 91},
      "fuels": ["gasoline"],
      "displacement": {"unit": "cc", "value": 976}
    },
    "equipments": ["Winch", "Snow plough mount", "Heated grips"]
  }
}

Camper / Motorhome (1102)

In addition to the common registered vehicle fields, Camper supports the following category-specific fields. All category-specific fields are optional.

body_type is validated against available camper body types. bed_type and powertrain.drive_type are validated against available values. Fields marked (V4.3) were added in V4.3.

Field	Type	Description
`bed_type`	string	(V4.3) Bed type slug, e.g. `"double-bed"`. Validated against available values.
`chassis_type`	string	(V4.3) Chassis base vehicle, e.g. `"Fiat Ducato"`, `"Iveco Daily"`.
`condition.mileage`	object	Mileage, e.g. `{"unit": "km", "value": 50000}`. Units: `km`, `mil`. Status change between new/used is allowed.
`condition.is_new_vehicle`	boolean	Whether the vehicle is new. Derived from mileage if not provided.
`condition.number_of_owners`	integer	(V4.3) Number of previous owners. `0` (or null) is only valid for new vehicles; used vehicles require at least 1.
`condition.has_warranty`	boolean	(V4.4) Whether the camper has a valid warranty from the manufacturer or dealer.
`powertrain.transmission`	string	Transmission type: `manual`, `automatic`, `sequential`.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 180}`. Units: `hp`, `kw`.
`powertrain.fuels`	array of strings	Fuel types: `gasoline`, `diesel`, `electric`, `ethanol`, `natural_gas`. Case insensitive.
`powertrain.drive_type`	string	(V4.3) Drive type slug, e.g. `"fwd"`. Validated against available values.
`powertrain.displacement`	object	(V4.3) Engine displacement, e.g. `{"unit": "cc", "value": 2287}`. Units: `cc`, `l`.
`physics.gross_weight`	object	Gross vehicle weight, e.g. `{"unit": "kg", "value": 3500}`. Units: `g`, `kg`, `t`.
`physics.curb_weight`	object	Curb weight (weight without load), e.g. `{"unit": "kg", "value": 2800}`. Units: `g`, `kg`, `t`.
`physics.length`	object	Overall length, e.g. `{"unit": "m", "value": 7.5}`. Units: `mm`, `cm`, `m`.
`physics.width`	object	(V4.3) Overall width, e.g. `{"unit": "m", "value": 2.3}`. Units: `mm`, `cm`, `m`.
`physics.number_of_beds`	integer	Number of beds / sleeping places.
`physics.number_of_seats`	integer	(V4.3) Number of passenger seats.

Example (POST /v4/camper):

{
  "source_id": "camper-001",
  "dealer_code": "YOUR_CODE",
  "body": "Spacious Mercedes camper with 4 beds and full kitchen",
  "price": [{"type": "list", "amount": 450000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "body_type": "integrated",
    "brand": "mercedes-benz",
    "model": "sprinter",
    "model_year": 2019,
    "registration_number": "DEF456",
    "bed_type": "double-bed",
    "chassis_type": "Fiat Ducato",
    "condition": {
      "mileage": {"unit": "km", "value": 50000},
      "number_of_owners": 1
    },
    "physics": {
      "gross_weight": {"unit": "kg", "value": 3500},
      "curb_weight": {"unit": "kg", "value": 2800},
      "length": {"unit": "m", "value": 7.5},
      "width": {"unit": "m", "value": 2.3},
      "number_of_beds": 4,
      "number_of_seats": 4
    },
    "powertrain": {
      "transmission": "manual",
      "fuels": ["diesel"],
      "drive_type": "fwd",
      "displacement": {"unit": "cc", "value": 2287}
    }
  }
}

Caravan (1101)

In addition to the common registered vehicle fields, Caravan supports the following category-specific fields. All category-specific fields are optional.

body_type is validated against available caravan body types. Caravan has no powertrain fields. Fields marked (V4.3) were added in V4.3.

Field	Type	Description
`condition.is_new_vehicle`	boolean	Whether the vehicle is new.
`condition.number_of_owners`	integer	(V4.3) Number of previous owners. `0` (or null) is only valid for new vehicles; used vehicles require at least 1.
`condition.has_warranty`	boolean	(V4.3) Whether the caravan has a valid warranty.
`physics.gross_weight`	object	Gross weight, e.g. `{"unit": "kg", "value": 1800}`. Units: `g`, `kg`, `t`.
`physics.curb_weight`	object	Curb weight (weight without load), e.g. `{"unit": "kg", "value": 1200}`. Units: `g`, `kg`, `t`.
`physics.length`	object	Overall length, e.g. `{"unit": "m", "value": 6.5}`. Units: `mm`, `cm`, `m`.
`physics.interior_length`	object	(V4.3) Interior length, e.g. `{"unit": "m", "value": 5.2}`. Units: `mm`, `cm`, `m`.
`physics.width`	object	(V4.3) Overall width, e.g. `{"unit": "m", "value": 2.3}`. Units: `mm`, `cm`, `m`.
`physics.number_of_beds`	integer	Number of beds / sleeping places.

Example (POST /v4/caravan):

{
  "source_id": "caravan-001",
  "dealer_code": "YOUR_CODE",
  "body": "Modern Kabe caravan in excellent condition",
  "price": [{"type": "list", "amount": 150000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "body_type": "2-axle",
    "brand": "kabe",
    "model": "classic",
    "model_year": 2018,
    "registration_number": "CAR123",
    "condition": {
      "is_new_vehicle": false,
      "has_warranty": true
    },
    "physics": {
      "gross_weight": {"unit": "kg", "value": 1800},
      "curb_weight": {"unit": "kg", "value": 1200},
      "length": {"unit": "m", "value": 6.5},
      "interior_length": {"unit": "m", "value": 5.2},
      "width": {"unit": "m", "value": 2.3},
      "number_of_beds": 6
    }
  }
}

Trailer (1045)

Creating new trailer ads is no longer supported (V4.4). POST /v4/trailer, POST /v4/ad, and POST /v3/ad with category_id 1045 return 400 with error: trailer_create_disabled. Existing trailer ads can still be updated (PUT/PATCH) and deleted (DELETE) on both V3 and V4.

In addition to the common registered vehicle fields, Trailer supports the following category-specific fields. All category-specific fields are optional.

body_type is validated against available trailer body types. Trailer has no powertrain fields.

Field	Type	Description
`condition.is_new_vehicle`	boolean	Whether the vehicle is new.
`condition.number_of_owners`	integer	(V4.3) Number of previous owners. `0` (or null) is only valid for new vehicles; used vehicles require at least 1.
`physics.gross_weight`	object	Gross weight, e.g. `{"unit": "kg", "value": 2000}`. Units: `g`, `kg`, `t`.
`physics.length`	object	Overall length, e.g. `{"unit": "m", "value": 4.5}`. Units: `mm`, `cm`, `m`.
`physics.cargo`	object	Cargo dimensions. Nested object with `length`, `width`, `height` — each a length unit object (units: `mm`, `cm`, `m`).

Example (fields accepted when updating an existing trailer via PUT/PATCH /v4/trailer/{source_id}):

{
  "source_id": "trailer-001",
  "dealer_code": "YOUR_CODE",
  "body": "Horse trailer for 2 horses with living quarters",
  "price": [{"type": "list", "amount": 80000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "body_type": "horse",
    "brand": "böckmann",
    "model": "comfort",
    "model_year": 2020,
    "registration_number": "TRL123",
    "condition": {
      "is_new_vehicle": false
    },
    "physics": {
      "gross_weight": {"unit": "kg", "value": 2000},
      "length": {"unit": "m", "value": 4.5},
      "cargo": {
        "length": {"unit": "m", "value": 3.0},
        "width": {"unit": "m", "value": 1.7},
        "height": {"unit": "m", "value": 2.3}
      }
    }
  }
}

Boat (1060)

All category_fields are optional.

Field	Type	Description
`brand`	string	Make slug (e.g. `"bayliner"`, `"hallberg-rassy"`). Validated against available values.
`model`	string	Model name (free text).
`model_year`	integer	Manufacturing year.
`body_type`	string	Boat class slug. Validated against available values.
`registration_number`	string	Boat registration number.
`srs_number`	string	SRS number (Swedish boat register).
`color`	string	Color of the boat.
`max_speed`	object	Max speed, e.g. `{"unit": "knots", "value": 30}`. Units: `knots`, `kmh`.
`motor_included`	boolean	Whether a motor is included in the sale.
`powertrain.type`	string	Motor type slug (e.g. `"outboard"`). Validated against available values.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 200}`. Units: `hp`, `kw`.
`powertrain.fuel`	string	Motor fuel slug (e.g. `"diesel"`). Validated against available values.
`powertrain.engine_brand`	string	Engine manufacturer (free text), e.g. `"Volvo Penta"`.
`physics.length`	object	Overall length, e.g. `{"unit": "m", "value": 10.5}`. Units: `mm`, `cm`, `m`.
`physics.weight`	object	Weight, e.g. `{"unit": "kg", "value": 3500}`. Units: `g`, `kg`, `t`.
`physics.depth`	object	Depth below waterline, e.g. `{"unit": "m", "value": 1.2}`. Units: `mm`, `cm`, `m`.
`physics.width`	object	Beam (width), e.g. `{"unit": "cm", "value": 320}`. Units: `mm`, `cm`, `m`.
`physics.material`	string	Hull material slug. Validated against available values.
`physics.number_of_seats`	integer	Number of seats.
`physics.number_of_beds`	integer	Number of beds.
`equipments`	array of strings	Equipment list. One item per element — do not use commas within items.

Example — Motorboat (POST /v4/boat):

{
  "source_id": "boat-001",
  "dealer_code": "YOUR_CODE",
  "body": "Well-maintained Bayliner with Volvo Penta engine",
  "price": [{"type": "list", "amount": 250000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "brand": "bayliner",
    "model": "VR5",
    "model_year": 2020,
    "body_type": "daycruiser",
    "registration_number": "SE12345",
    "color": "white",
    "max_speed": {"unit": "knots", "value": 35},
    "motor_included": true,
    "powertrain": {
      "type": "outboard",
      "power": {"unit": "hp", "value": 200},
      "fuel": "petrol",
      "engine_brand": "Volvo Penta"
    },
    "physics": {
      "length": {"unit": "m", "value": 6.7},
      "weight": {"unit": "kg", "value": 1400},
      "material": "fiberglass",
      "number_of_seats": 8
    },
    "equipments": ["GPS", "Anchor winch", "Shore power", "Swim platform"]
  }
}

Bus (1321)

All category_fields are optional. brand, body_type, powertrain.axle_type, physics.box_type, physics.cabin_type, physics.suspension_front, and physics.suspension_rear are validated against available values (see Swagger schema for valid options).

Field	Type	Description
`brand`	string	Make slug (e.g. `"volvo"`, `"scania"`). Validated against available values.
`body_type`	string	Bus segment slug (e.g. `"bus"`). Validated against available values.
`model`	string	Model name (free text).
`model_year`	integer	Model year.
`registration_number`	string	Registration number.
`vin`	string	Chassis number / VIN (5–17 characters).
`eu_approved`	boolean	EU type approval.
`eu_approved_date`	string	EU approval date (`YYYY-MM-DD`).
`in_traffic_date`	string	First registration date (`YYYY-MM-DD`).
`condition.mileage`	object	Mileage, e.g. `{"unit": "km", "value": 150000}`. Units: `km`, `mil`.
`powertrain.axle_type`	string	Axle type slug (e.g. `"4x2"`). Validated against available values.
`powertrain.transmission`	string	Transmission (free text), e.g. `"automatic"`, `"opticruise"`, `"I-Shift"`.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 350}`. Units: `hp`, `kw`.
`powertrain.displacement`	object	Engine displacement, e.g. `{"unit": "l", "value": 9.3}`. Units: `cc`, `l`.
`physics.cabin_type`	string	Cabin type slug. Validated against available values.
`physics.box_type`	string	Box type slug. Validated against available values.
`physics.length`	object	Overall length.
`physics.wheelbase`	object	Wheelbase length.
`physics.gross_weight`	object	Total weight, e.g. `{"unit": "kg", "value": 12000}`.
`physics.cargo_weight`	object	Cargo weight capacity.
`physics.boot_size`	object	Cargo volume, e.g. `{"unit": "m3", "value": 30}`.
`physics.number_of_seats`	integer	Number of seats.
`physics.interior_size_height`	object	Interior height.
`physics.interior_size_length`	object	Interior length.
`physics.interior_size_width`	object	Interior width.
`physics.suspension_front`	string	Front suspension slug. Validated against available values.
`physics.suspension_rear`	string	Rear suspension slug. Validated against available values.
`physics.extra_brake`	boolean	Has extra brake.
`physics.tail_lift`	boolean	Has tail lift.
`equipments`	array of strings	Equipment list. One item per element.

Example (POST /v4/bus):

{
  "source_id": "bus-001",
  "dealer_code": "YOUR_CODE",
  "title": "Volvo 9700 touring coach",
  "body": "Well-maintained Volvo 9700 touring coach",
  "contact": {"name": "Seller", "email": "seller@example.com", "phone": "0700000006"},
  "price": [{"type": "list", "amount": 1200000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "brand": "volvo",
    "body_type": "bus",
    "model": "9700",
    "model_year": 2020,
    "registration_number": "BUS123",
    "condition": {
      "mileage": {"unit": "km", "value": 150000}
    },
    "powertrain": {
      "axle_type": "4x2",
      "transmission": "automatic",
      "power": {"unit": "hp", "value": 460},
      "displacement": {"unit": "l", "value": 12.8}
    },
    "physics": {
      "number_of_seats": 53,
      "gross_weight": {"unit": "kg", "value": 18000},
      "suspension_front": "air",
      "suspension_rear": "air"
    },
    "equipments": ["AC", "Toilet", "WiFi"]
  }
}

Truck (1322)

Field	Type	Description
`brand`	string	Make slug (e.g. `"volvo"`, `"scania"`). Validated against available values.
`body_type`	string	Truck segment slug (e.g. `"truck"`). Validated against available values.
`model`	string	Model name (free text).
`model_year`	integer	Model year.
`registration_number`	string	Registration number.
`vin`	string	Chassis number / VIN (5–17 characters).
`eu_approved`	boolean	EU type approval.
`eu_approved_date`	string	EU approval date (`YYYY-MM-DD`).
`in_traffic_date`	string	First registration date (`YYYY-MM-DD`).
`condition.mileage`	object	Mileage, e.g. `{"unit": "km", "value": 250000}`. Units: `km`, `mil`.
`powertrain.axle_type`	string	Axle type slug (e.g. `"4x2"`). Validated against available values.
`powertrain.transmission`	string	Transmission (free text), e.g. `"automatic"`, `"opticruise"`, `"I-Shift"`.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 460}`. Units: `hp`, `kw`.
`powertrain.displacement`	object	Engine displacement, e.g. `{"unit": "l", "value": 12.8}`. Units: `cc`, `l`.
`physics.cabin_type`	string	Cabin type slug (e.g. `"long"`). Validated against available values.
`physics.box_type`	string	Box type slug (e.g. `"freezer"`). Validated against available values.
`physics.box_length`	object	Box length, e.g. `{"unit": "m", "value": 7.5}`.
`physics.length`	object	Overall length.
`physics.wheelbase`	object	Wheelbase length.
`physics.gross_weight`	object	Total weight, e.g. `{"unit": "kg", "value": 18000}`.
`physics.cargo_weight`	object	Cargo weight capacity.
`physics.boot_size`	object	Cargo volume, e.g. `{"unit": "m3", "value": 40}`.
`physics.number_of_seats`	integer	Number of seats.
`physics.number_of_pallets`	integer	Number of pallets (1–50).
`physics.interior_size_height`	object	Interior height.
`physics.interior_size_length`	object	Interior length.
`physics.interior_size_width`	object	Interior width.
`physics.suspension_front`	string	Front suspension slug (e.g. `"air"`). Validated against available values.
`physics.suspension_rear`	string	Rear suspension slug (e.g. `"air"`). Validated against available values.
`physics.extra_brake`	boolean	Has extra brake.
`physics.tail_lift`	boolean	Has tail lift.
`equipments`	array of strings	Equipment list. One item per element.

Example (POST /v4/truck):

{
  "source_id": "truck-001",
  "dealer_code": "YOUR_CODE",
  "title": "Volvo FH16 750",
  "body": "Well-maintained Volvo FH16 with low mileage",
  "contact": {"name": "Seller", "email": "seller@example.com", "phone": "0700000005"},
  "price": [{"type": "list", "amount": 850000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "brand": "volvo",
    "body_type": "truck",
    "model": "FH16 750",
    "model_year": 2022,
    "registration_number": "TRK123",
    "vin": "YV2RT40A5NB123456",
    "condition": {
      "mileage": {"unit": "km", "value": 120000}
    },
    "powertrain": {
      "axle_type": "6x4",
      "transmission": "automatic",
      "power": {"unit": "hp", "value": 750},
      "displacement": {"unit": "l", "value": 16.1}
    },
    "physics": {
      "cabin_type": "long",
      "gross_weight": {"unit": "kg", "value": 26000},
      "number_of_seats": 2,
      "suspension_front": "air",
      "suspension_rear": "air",
      "tail_lift": false
    },
    "equipments": ["Retarder", "ACC", "Lane assist"]
  }
}

Agriculture Thresher (1227)

All category_fields are optional. brand and powertrain.fuel are validated against available values (see Swagger schema for valid options).

Field	Type	Description
`brand`	string	Make slug (e.g. `"claas"`, `"john-deere"`). Validated against available values.
`model`	string	Model (free text), e.g. `"Lexion 770"`.
`model_year`	integer	Manufacturing year.
`powertrain.fuel`	string	Fuel type slug (e.g. `"diesel"`). Validated against available values.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 467}`. Units: `hp`, `kw`.
`powertrain.displacement`	object	Engine displacement, e.g. `{"unit": "l", "value": 15.6}`. Units: `cc`, `l`.
`condition.engine_runtime`	object	Working hours, e.g. `{"unit": "hour", "value": 3200}`. Minimum 1 hour.
`physics.gross_weight`	object	Machine weight, e.g. `{"unit": "kg", "value": 15000}`. Units: `g`, `kg`, `t`.
`equipments`	array of strings	Equipment list. One item per element.

Example (POST /v4/agriculture-thresher):

{
  "source_id": "thresher-001",
  "dealer_code": "YOUR_CODE",
  "title": "Claas Lexion 770 thresher",
  "body": "Well-maintained Claas Lexion 770 thresher",
  "contact": {"name": "Seller", "email": "seller@example.com", "phone": "0700000001"},
  "price": [{"type": "list", "amount": 2500000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "brand": "claas",
    "model": "Lexion 770",
    "model_year": 2018,
    "powertrain": {
      "fuel": "diesel",
      "power": {"unit": "hp", "value": 467},
      "displacement": {"unit": "l", "value": 15.6}
    },
    "condition": {
      "engine_runtime": {"unit": "hour", "value": 3200}
    },
    "physics": {
      "gross_weight": {"unit": "kg", "value": 15000}
    },
    "equipments": ["GPS", "Auto-steering", "Yield monitor"]
  }
}

Agriculture Tractor (1228)

All category_fields are optional. brand and powertrain.fuel are validated against available values (see Swagger schema for valid options).

Same fields as Agriculture Thresher, plus:

Field	Type	Description
`registration_number`	string	Vehicle registration number.
`vin`	string	Chassis number / VIN (5–17 characters).
`tyre.front`	string	Front tyre size (free text), e.g. `"650/65R38"`.
`tyre.rear`	string	Rear tyre size (free text), e.g. `"900/60R32"`.

Example (POST /v4/agriculture-tractor):

{
  "source_id": "tractor-001",
  "dealer_code": "YOUR_CODE",
  "title": "John Deere 6R 250 tractor",
  "body": "Low-hours John Deere 6R 250 tractor",
  "contact": {"name": "Seller", "email": "seller@example.com", "phone": "0700000002"},
  "price": [{"type": "list", "amount": 950000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "brand": "john-deere",
    "model": "6R 250",
    "model_year": 2021,
    "registration_number": "ABC123",
    "powertrain": {
      "fuel": "diesel",
      "power": {"unit": "hp", "value": 250}
    },
    "condition": {
      "engine_runtime": {"unit": "hour", "value": 1500}
    },
    "physics": {
      "gross_weight": {"unit": "kg", "value": 8000}
    }
  }
}

Agriculture Tools (1229)

All category_fields are optional. tools_category is validated against available values (see Swagger schema for valid options).

Field	Type	Description
`brand`	string	Brand (free text), e.g. `"Husqvarna"`, `"John Deere"`.
`model`	string	Model (free text), e.g. `"T540i"`.
`model_year`	integer	Manufacturing year.
`physics.gross_weight`	object	Machine weight, e.g. `{"unit": "kg", "value": 250}`. Units: `g`, `kg`, `t`.
`tools_category`	string	Tool sub-category slug (e.g. `"chainsaw"`, `"tractor-mower"`). Validated against available values.

Example — Forestry Machinery (POST /v4/agriculture-tools):

{
  "source_id": "tools-001",
  "dealer_code": "YOUR_CODE",
  "title": "Husqvarna T540i chainsaw",
  "body": "Lightly used Husqvarna T540i top-handle chainsaw",
  "contact": {"name": "Seller", "email": "seller@example.com", "phone": "0700000003"},
  "price": [{"type": "list", "amount": 8500, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "brand": "husqvarna",
    "model": "T540i",
    "physics": {"gross_weight": {"unit": "kg", "value": 5}},
    "tools_category": "chainsaw"
  }
}

Example — Ground Care Machinery (POST /v4/agriculture-tools):

{
  "source_id": "tools-002",
  "dealer_code": "YOUR_CODE",
  "title": "John Deere X350R ride-on mower",
  "body": "Low-hours John Deere X350R tractor mower",
  "contact": {"name": "Seller", "email": "seller@example.com", "phone": "0700000004"},
  "price": [{"type": "list", "amount": 45000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "brand": "john-deere",
    "model": "X350R",
    "physics": {"gross_weight": {"unit": "kg", "value": 310}},
    "tools_category": "tractor-mower"
  }
}

Construction (1323)

All category_fields are optional. brand, body_type, cab_type, and chassis_type are validated against available values (see Swagger schema for valid options).

Field	Type	Description
`brand`	string	Make slug (e.g. `"volvo"`, `"caterpillar"`). Validated against available values.
`body_type`	string	Segment slug (e.g. `"excavator"`). Validated against available values.
`model_year`	integer	Model year (1900–2100).
`service_contract`	boolean	Machine has a service contract.
`vin`	string	Chassis/VIN number.
`condition.engine_runtime`	object	Working hours, e.g. `{"unit": "hour", "value": 3200}`.
`powertrain.power`	object	Engine power, e.g. `{"unit": "hp", "value": 250}`.
`powertrain.displacement`	object	Engine displacement, e.g. `{"unit": "cc", "value": 4500}`.
`powertrain.transmission`	string	Transmission type.
`physics.gross_weight`	object	Gross weight, e.g. `{"unit": "kg", "value": 8000}`.
`physics.workload`	object	Work load, e.g. `{"unit": "kg", "value": 5000}`.
`physics.lift_capacity`	object	Lifting capacity, e.g. `{"unit": "kg", "value": 3000}`.
`physics.lift_height`	object	Lifting height, e.g. `{"unit": "m", "value": 6}`.
`physics.boot_size`	object	Load capacity, e.g. `{"unit": "m3", "value": 2.5}`.
`physics.max_speed`	integer	Top speed in km/h.
`physics.additional_hydraulics`	boolean	Machine has additional hydraulics.
`physics.auxiliary_hydraulics_performance`	integer	Auxiliary hydraulics performance in litres/min.
`physics.cab_type`	string	Cab type slug. Validated against available values.
`physics.ce_marked`	boolean	Machine has CE certification.
`physics.chassis_type`	string	Chassis type slug. Validated against available values.
`physics.statement_of_compliance`	boolean	Machine has statement of compliance.

Example (POST /v4/construction):

{
  "source_id": "construction-001",
  "dealer_code": "YOUR_CODE",
  "title": "Volvo EC220E Excavator",
  "body": "Well-maintained Volvo excavator with low hours",
  "contact": {"name": "Seller", "email": "seller@example.com", "phone": "0700000005"},
  "price": [{"type": "list", "amount": 850000, "currency": "SEK"}],
  "visible": true,
  "location": {"longitude": 18.0686, "latitude": 59.3293},
  "category_fields": {
    "brand": "volvo",
    "body_type": "excavator",
    "model_year": 2020,
    "vin": "VCE0EC220E1234567",
    "condition": {"engine_runtime": {"unit": "hour", "value": 3200}},
    "powertrain": {
      "power": {"unit": "hp", "value": 170},
      "displacement": {"unit": "cc", "value": 5700}
    },
    "physics": {
      "gross_weight": {"unit": "kg", "value": 22000},
      "lift_capacity": {"unit": "kg", "value": 5000},
      "cab_type": "enclosed",
      "ce_marked": true
    }
  }
}