github.com/prebid/prebid-server/v2@v2.18.0/endpoints/openrtb2/sample-requests/invalid-whole/only-request-id.json (about)

     1  {
     2    "description": "Bid request is is missing imp array",
     3    "mockBidRequest": {
     4      "id": "req-id"
     5    },
     6    "expectedReturnCode": 400,
     7    "expectedErrorMessage": "Invalid request: request.imp must contain at least one element.\n"
     8  }