Vehicle Ownership Transfer Count Query

Use Cases

• Used car valuation and transaction decisions: judge vehicle transfer frequency to assist pricing, acquisition, and sale.
• Condition and risk verification: identify potential risks such as frequent transfers and short-term flipping.
• Insurance and finance review: assist insurance underwriting, auto-loan approval, and risk assessment.

Endpoint

POST /api/v1/getVehTransferCount

See the cooperation email notification for the endpoint.

Request Parameters

Request headers: Authorization: Bearer <ACCESS_TOKEN>, Content-Type: application/json.

{"vin":"1HGBH41JXMN000001"}

vin is required and must be a 17-character VIN. Do not add other fields to the request body.

Response Fields

Common Response Fields

Field	Type	Meaning
code	string	Business status code: 0000 success, 0001 no data, 4001 parameter format error, 5001 service processing failure, 5002 supplier token acquisition failure. Not used when the authentication layer rejects.
message	string	Business processing result description, returned by the service on success, no-data, or failure.
data	object/array/null	Business result. An object or array on success; usually null on no-data or business failure.
request_id	string	Request trace ID for troubleshooting; do not use it as a substitute for a key or token.

data Fields

Field	Type	Meaning
vin	string	The VIN of the queried vehicle.
transferCount	string	Historical vehicle ownership-transfer count; returned as a string, "0" is a valid zero-transfer result.

Examples

Free Test Case

Uses the current Swagger default input: vin=1HGBH41JXMN000001.

curl -X POST \
  "https://<API_HOST>/api/v1/getVehTransferCount" \
  -H "Authorization: Bearer <ACCESS_TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"vin":"1HGBH41JXMN000001"}'

Success Response

The following is the field-structure example based on the default test input; the count is for illustration only, and the actual result is subject to the interface response.

{
  "code":"0000",
  "message":"成功",
  "data":{"vin":"1HGBH41JXMN00****","transferCount":"0"},
  "request_id":"request-id"
}

transferCount uses a string; "0" is a valid result and must not be treated as no-data.

Error Codes

Business Codes & Notes

0000 success, 0001 no data, 4001 VIN format incorrect, 5001 service processing failure, 5002 supplier token acquisition failure. Authentication-layer errors are handled per the common authentication documentation.

VIN Format Error (HTTP 400)

{"code":"4001","message":"VIN格式不正确","data":null,"request_id":"request-id"}

No Data, Service Failure, and Token Failure (HTTP 200)

{"code":"0001","message":"查无数据","data":null,"request_id":"request-id"}

{"code":"5001","message":"供应商接口调用失败","data":null,"request_id":"request-id"}

{"code":"5002","message":"供应商Token获取失败","data":null,"request_id":"request-id"}

Authentication-layer errors are HTTP 401, 403, 429, 503 and do not use business codes.