{
  "mockBidRequest": {
    "id": "0000000000001",
    "imp": [
      {
        "id": "malconfigured-adunit",
        "banner": {
          "w": 300,
          "h": 250
        },
        "ext": {
          "bidder": {
            "tappxkey": 1,
            "endpoint": "ZZ123456PS"
          }
        }
      }
    ]
  },

  "expectedMakeRequestsErrors": [
    {
      "value": "Error parsing tappxExt parameters",
      "comparison": "literal"
    }
  ]
}