https://community.esri.com/t5/arcgis-enterprise-questions/query-related-records-returns-quot-invalid/m-p/1368012#M38197 <P>I have a feature class and a related table that are related through a simple, 1:1 relationship class. The feature class has a field "RRNum", and the foreign key in the table is "RR". There are attachments enabled on the feature class, but I haven't found that that should be an issue. I have published them in a map service to ArcGIS Server, and both the layer and the table show up in the service information. They also display as being related to each other. However, when I go to the feature service and select "query related records", nothing will return in the query and I will get an error that says&nbsp;"Invalid relationshipID." They definitely show up within Pro, so I'm not sure what I'm doing wrong. Does anyone have any advice?&nbsp;</P> Tue, 09 Jan 2024 18:41:33 GMT MaryGraceMcClellan 2024-01-09T18:41:33Z https://community.esri.com/t5/arcgis-enterprise-questions/query-related-records-returns-quot-invalid/m-p/1368012#M38197 <P>I have a feature class and a related table that are related through a simple, 1:1 relationship class. The feature class has a field "RRNum", and the foreign key in the table is "RR". There are attachments enabled on the feature class, but I haven't found that that should be an issue. I have published them in a map service to ArcGIS Server, and both the layer and the table show up in the service information. They also display as being related to each other. However, when I go to the feature service and select "query related records", nothing will return in the query and I will get an error that says&nbsp;"Invalid relationshipID." They definitely show up within Pro, so I'm not sure what I'm doing wrong. Does anyone have any advice?&nbsp;</P> Tue, 09 Jan 2024 18:41:33 GMT https://community.esri.com/t5/arcgis-enterprise-questions/query-related-records-returns-quot-invalid/m-p/1368012#M38197 MaryGraceMcClellan 2024-01-09T18:41:33Z