Request:
POST /api/adwords/reportdownload/v201809 HTTP/1.1
User-Agent: Test App (AwApi-PHP, googleads-php-lib/25.0.0, PHP/5.5.9, GuzzleHttp/6.0.0, curl/7.52.0)
Content-Type: application/x-www-form-urlencoded
Host: adwords.google.com
Authorization: REDACTED
developerToken: REDACTED
clientCustomerId: 111-222-3333
skipReportHeader: false
skipColumnHeader: false
skipReportSummary: false
useRawEnumValues: true
includeZeroImpressions: false

__rdquery=SELECT CampaignId, AdGroupId, Id, Criteria, CriteriaType, Impressions, Clicks, Cost FROM CRITERIA_PERFORMANCE_REPORT WHERE Status IN [ENABLED, PAUSED] DURING LAST_7_DAYS&__fmt=CSV

Response:
HTTP/1.1 400 Bad Request

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><reportDownloadError><ApiError><type>ReportDefinitionError.INVALID_FIELD_NAME_FOR_REPORT</type><trigger>CampaignId1</trigger><fieldPath></fieldPath></ApiError></reportDownloadError>

--------
Error:
Client error: `POST /api/adwords/reportdownload/v201809` resulted in a `400 Bad Request` response:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><reportDownloadError><ApiError><type>ReportDefinitionError.INVALI (truncated...)