Hello,
I am working on a hydrant inspection project, and all has gone well for several weeks now. The project has a feature layer (hydrants) with several related tables (hydrant painting, repair, etc.). I am looking to add an extra field to one of the related tables using ArcGIS Pro, but I am having some problems when trying to save my changes.
The result I receive when saving is: ERROR 000687: Does not have a feature attribute table

I'm not sure if it makes a difference, but these tables are populated with several thousand inspections and have a relationship class to a feature layer. I exported these from AGOL as a FGDB and imported them into ArcGIS Pro where I could hopefully make these changes.
I am unable to find many other articles on this, but I would appreciate any help, thanks!