# Limitations The following are limitations for the Google Ads connector: + `MANAGER_ID` is an optional input when creating a connection. But when you want to access the customers underlying any particular manager, then `MANAGER_ID` is a mandatory input. The table below explains the access limitations based on whether `MANAGER_ID` is included or not in a connection. [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/glue/latest/dg/googleads-connector-limitations.html) + When a manager account is chosen as the object, only `Account` will appear as a sub-object. In the Google Ads connector, entities such as campaigns, ads, etc., are retrieved based on individual client accounts, not the manager account. + You cannot retrieve metrics for the manager account. You can retrieve metrics for individual client accounts instead. + Each account can have up to 10,000 campaigns, including both active and paused campaigns. For more information, see [Campaign per account](https://support.google.com/google-ads/answer/6372658). + When creating a report, if you choose certain metrics to display, any rows whose selected metrics are all zero won't be returned. For more information, see [ Zero Metrics ](https://developers.google.com/google-ads/api/docs/reporting/zero-metrics?hl=en#exclude_zero_metrics_by_segmenting). + With the following fields, the Full Mapping flow will not work for Account, Ad Group and Ad Group Ad entities, specifically for conversionAction, conversionActionCategory, conversionActionName. For more information, see [ Segment and Metrics ](https://developers.google.com/google-ads/api/docs/reporting/segmentation?hl=en#selectability_between_segments_and_metrics). + A date range filter is mandatory when the `segments.date` field is selected.