Hi Hans, The Click Performance Report includes both valid and invalid clicks. However, there is no way to validate whether the GCLID is associated with which kind of click using this report. The closest thing to do would be to use either the Campaign or Account Performance Report and include the InvalidClicks <https://developers.google.com/adwords/api/docs/appendix/reports/all-reports#invalidclicks> field. You can use then compare that to the count of GCLIDs that you suspect are invalid clicks for a given account or campaign.
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