How to filter marketplace vehicles with Facebook API - facebook

Question

I am doing /vehicles?limit=300&filter=[{"field":"vehicle_id", "value":"106892", "operator": "EQUAL"}] and then getting error (#100) For field 'vehicles': Param filter must be a valid WCA rule..
==== Query
curl -i -X GET \
"https://graph.facebook.com/v9.0/{catelog_id}/vehicles?limit=300&filter=%5B%7B%22field%22%3A%22vehicle_id%22%2C%20%22value%22%3A%22106892%22%2C%20%22operator%22%3A%20%22EQUAL%22%7D%5D&access_token=<access token sanitized>"
==== Parameters
- Query Parameters
{
"limit": "300",
"filter": "[{\"field\":\"vehicle_id\", \"value\":\"106892\", \"operator\": \"EQUAL\"}]"
}
- POST Parameters
{}
==== Response
{
"error": {
"message": "(#100) For field 'vehicles': Param filter must be a valid WCA rule.",
"type": "OAuthException",
"code": 100,
"fbtrace_id": "xxx"
}
}
Facebook Ref: https://developers.facebook.com/docs/marketing-api/reference/product-catalog/vehicles/. I cannot find any clear guide how this filter should be.

Answer 1

The filter field should be a valid JSON-encoded WCA rule expression representing the filter to be applied for the edge. You could find reference for this definition here and here (Filter Rules, se also the Example Filter Rules section). In your example, should be something like:
/vehicles?filter={"vehicle_id":{"eq":"106892"}}