Create a link

curl --request POST \
  --url https://partnerapi.biltrewards.com/v1/account-links/oauth-link \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "idToken": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9...",
  "partnerUserId": "p-7f3a9c"
}
'

{
  "linkId": "3b1f6a52-9d0e-4c8a-a1f4-2e6d7c9b8a10",
  "partnerUserId": "p-7f3a9c",
  "linkStatus": "LINKED",
  "linkedAt": "2026-05-01T14:03:22Z",
  "partnerDetails": {}
}

{
  "title": "Constraint Violation",
  "status": 400,
  "violations": [
    {
      "field": "unlink.request.partnerUserId",
      "message": "must not be blank"
    }
  ]
}

{
  "error": {
    "code": "ID_TOKEN_EXPIRED",
    "message": "id_token is expired",
    "requestId": "4bf92f3577b34da6a3ce929d0e0e4736"
  }
}

{
  "error": {
    "code": "ALREADY_LINKED",
    "message": "Member is already linked to a different partner account",
    "requestId": "4bf92f3577b34da6a3ce929d0e0e4736"
  }
}

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "<string>",
    "requestId": "<string>",
    "source": "<string>",
    "retry": true,
    "customProperties": {},
    "humanReadableMessage": true
  }
}

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "<string>",
    "requestId": "<string>",
    "source": "<string>",
    "retry": true,
    "customProperties": {},
    "humanReadableMessage": true
  }
}