# Limitations
<a name="googleads-connector-limitations"></a>

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.


<table>
<thead>
  <tr><th>MANAGER_ID provided when creating connection?</th><th>Accessible customers</th></tr>
</thead>
<tbody>
  <tr><td>Yes</td><td>The customers listed under the provided MANAGER_ID along with the MANAGER_ID.</td></tr>
  <tr><td>No</td><td>All customers will be listed, but customers underlying any manager will not be accessible.</td></tr>
</tbody>
</table>

+ 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.