BUG-000150795 for ArcGIS Pro

Bug ID Number	BUG-000150795
Submitted	July 14, 2022
Last Modified	October 7, 2024
Applies to	ArcGIS Pro
Version found	2.9.3
Operating System	Windows OS
Operating System Version	10.0 64 Bit
Status	As Designed

Additional Information

This is the expected behavior of the Add Join tool. The Add Join tool creates a temporary join that disappears at the end of a session. In a script tool, the join disappears at the conclusion of the script. Refer to, https://pro.arcgis.com/en/pro-app/2.8/tool-reference/data-management/add-join.htm, "The join persists only for the duration of the layer. A layer can be retained by saving the ArcGIS Pro session or by saving it to a layer file using the Save Layer To File tool." To persist the join on a map, set the AddJoin function in the script as a derived output. For example: lyr = arcpy.management.AddJoin(fc, fc_field, joinLayer, joinLayer_field) arcpy.SetParameterAsText(4, lyr) Then, in the script tool properties, in the Parameters section, set Parameter 4 to Type=Derived and Direction=Output to link it to the SetParameterAsText call in the script.