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

     1  {
     2    "description": "Bid request's sole imp element has empty extension",
     3    "mockBidRequest": {
     4      "id": "req-id",
     5      "imp": [
     6        {
     7          "id": "imp-id",
     8          "video": {
     9            "mimes": [
    10              "video/mp4"
    11              ]
    12          },
    13          "ext": {}
    14        }
    15      ],
    16      "app": {
    17        "id": "app_001"
    18      }
    19    },
    20    "expectedReturnCode": 400,
    21    "expectedErrorMessage": "Invalid request: request.imp[0].ext.prebid.bidder must contain at least one bidder\n"
    22  }