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Field Reference

Domain object

The domain field carries item-type-specific attributes. It uses a tagged union — the domain property inside the object determines the type.


Automotive parts

Use "domain": "automotive_part" for spare parts, body panels, engines, gearboxes, etc.

{
"domain": {
"domain": "automotive_part",
"oemCode": "31400452",
"manufacturer": "Volvo",
"compatibleModels": ["XC90", "XC90 II"],
"donorVehicleYear": 2018,
"conditionGrade": "B"
}
}
FieldTypeDescription
oemCodestringOEM part number. Required for automotive parts. Shown in the Tradera ad.
manufacturerstringVehicle manufacturer (e.g. Volvo, BMW, Scania).
compatibleModelsstring[]List of compatible model names.
donorVehicleYearintegerModel year of the donor vehicle.
conditionGradestringCondition rating. Rheo accepts any string; recommended values below.

Condition grades

GradeMeaning
A*New old stock or unused
AExcellent — minimal wear, fully functional
BGood — normal wear, fully functional
CFair — visible wear or minor damage, functional

These grades are displayed verbatim in the Tradera ad description.


Electronics

{
"domain": {
"domain": "electronics",
"serialNumber": "SN123456",
"memoryGb": 256,
"batteryHealthPercentage": 88
}
}
FieldTypeDescription
serialNumberstringDevice serial number.
memoryGbintegerStorage capacity in GB.
batteryHealthPercentageintegerBattery health (0–100).

Fashion

{
"domain": {
"domain": "fashion",
"size": "M",
"material": "Cotton",
"gender": "unisex"
}
}
FieldTypeDescription
sizestringSize label (e.g. M, 42, UK 8).
materialstringPrimary material.
genderstringmens, womens, or unisex.

Generic items

Omit the domain field entirely, or use "domain": "generic", for items that do not fit the above categories.


How domain data appears in Tradera ads

Rheo appends a structured section at the end of the Tradera ad description:

--- Technical Specification ---
OEM: 31400452
Condition: B
Compatible with: Volvo XC90 (2018)

This section is generated automatically from the domain fields you provide. The higher the quality of the data you send, the better the ad performs in Tradera search.