{
  "mockBidRequest": {
    "id": "test-req-id",
    "imp": [
      {
        "id": "1",
        "banner": {
            "format": [
                {
                    "w": 640
                }
            ],
            "w": 640
        },
        "ext": {
          "bidder": {
              "placementId": "plmt1",
              "publisherId": "pub1"
          }
        }
      }
    ],
    "app": {
      "id": "app-abc",
      "bundle": "com.prebid"
    },
    "device": {
      "ip": "152.193.6.74"
    },
    "user": {
      "id": "db089de9-a62e-4861-a881-0ff15e052516",
      "buyeruid": "v4_bidder_token"
    },
    "tmax": 500
  },
  "expectedMakeRequestsErrors": [
      {
          "value": "imp #1: banner height required",
          "comparison": "literal"
      }
  ]
}