github.com/prebid/prebid-server@v0.275.0/endpoints/openrtb2/sample-requests/invalid-whole/site-app-both.json (about)

     1  {
     2    "description": "Bid request comes with both site and app fields, it should only come with one or the other",
     3    "mockBidRequest": {
     4      "id": "req-id",
     5      "site": {
     6        "page": "test.mysite.com"
     7      },
     8      "app": {},
     9      "imp": [
    10        {
    11          "id": "imp-id",
    12          "video": {
    13            "mimes": [
    14              "video/mp4"
    15              ]
    16          },
    17          "ext": {
    18            "appnexus": {
    19              "placementId": 12883451
    20            }
    21          }
    22        }
    23      ]
    24    },
    25    "expectedReturnCode": 400,
    26    "expectedErrorMessage": "Invalid request: request.site or request.app must be defined, but not both.\n"
    27  }