We’ve recently began using the Custom Fields labs feature. One of the quirks we’ve run into is the inability to group Zip Code type dimensions.
We have no trouble creating the Custom Dimension to group by Zip Code, and the modals work just fine. But when it comes time to actually run the query, we get this error:
Initially, I thought that Zip Code dimensions just may not be supported in Custom Dimensions (similar to how they’re not able to be referenced in Custom Filters or Table Calculations), but reviewing the Looker docs tells me otherwise.
The docs specifically indicate that Zip Codes are supported in the Group custom fields. (the green “ZC” badge in the screenshot below)
Has anyone else run into this problem?