github.com/prebid/prebid-server/v2@v2.18.0/endpoints/openrtb2/sample-requests/invalid-whole/imp-ext-invalid-params.json (about)

     1  {
     2    "description": "Bid request's sole imp element has invalid ext value",
     3    "config": {
     4      "realParamsValidator": true
     5    },
     6    "mockBidRequest": {
     7      "id": "req-id",
     8      "imp": [
     9        {
    10          "id": "imp-id",
    11          "audio": {
    12            "mimes": [
    13              "video/mp4"
    14            ]
    15          },
    16          "ext": {
    17            "appnexus": "invalidParams"
    18          }
    19        }
    20      ],
    21      "app": {
    22        "id": "app_001"
    23      }
    24    },
    25    "expectedReturnCode": 400,
    26    "expectedErrorMessage": "Invalid request: request.imp[0].ext.prebid.bidder.appnexus failed validation.\n(root): Invalid type. Expected: object, given: string\n"
    27  }