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When saving edits to shapefiles or feature classes, the following error message may be returned:
"Unable to save edits. Cannot acquire a lock"
The issue occurs if one or more processes attempts edit a shapefile or feature class simultaneously.
Feature classes only support a single editor and multiple readers
• Ensure that only a single user is editing a shapefile or feature class.
• If the shapefile or feature class is within an application that may be hung, terminate the process to release the lock.
Once the locks are removed it should be possible to persist edits to the data.