Hi Arnab, My apologies for the confusion, upon checking again, the Ad Performance Report <https://developers.google.com/adwords/api/docs/appendix/reports/v201708/ad-performance-report> does in fact support the CriterionId <https://developers.google.com/adwords/api/docs/appendix/reports/v201708/ad-performance-report#criterionid> and CriteriaType <https://developers.google.com/adwords/api/docs/appendix/reports/v201708/ad-performance-report#criteriontype> fields. These fields should allow you to identify which criteria triggered your ad. Let me know if this helps.
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