PROBLEM
When publishing web maps from ArcGIS Pro to ArcGIS Online, the Show Related Records option is not available in the ArcGIS Online Map Viewer Classic pop-ups. This option is useful to view related records from the related table.
The following image displays the Show Related Records option is not available in a pop-up in ArcGIS Online Map Viewer Classic.
This is expected behavior. The related table is created without a prior existing relationship class.
To enable the Show Related Records option, create a relationship class before creating the related table in ArcGIS Pro. Refer to ArcGIS Pro: Create Relationship Class (Data Management) for more information.
The following image displays the Show Related Records option available in the pop-ups in ArcGIS Online Map Viewer Classic.
Article ID: 000026155
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