Request failed with HTTP code 400. Response: {"statusCode":400,"message":"campaign_id should not be empty, publisher_id should not be empty, caller_number must be a valid US phone number (10 digits, with or without +1), caller_number should not be empty, caller_zip must be a valid 5-digit US zip code, caller_zip should not be empty","error":"Bad Request","timestamp":"2026-04-30T16:53:12.113Z","path":"/v1/rtb/ping","requestId":"3d711550-dd02-48ad-b481-af50a81c2b92","code":"HTTP_400"}