(Required) Manager Account ID (also called MCC Account ID) used to list and access
customer accounts under this manager account. This is required for fetching the list
of customer accounts during source selection.
If the same field is also set in the object-level GoogleAdsOptions (connector_options),
the object-level value takes precedence over this top-level config.
(Required) Manager Account ID (also called MCC Account ID) used to list and access customer accounts under this manager account. This is required for fetching the list of customer accounts during source selection. If the same field is also set in the object-level GoogleAdsOptions (connector_options), the object-level value takes precedence over this top-level config.