You see this error when attempting to save data in your application:
Cannot update data: While you were editing, another user may have deleted the same record(s) you were modifying.
This message is normally displayed when a user attempts to update a record that was edited and saved by another user. This is a normal outcome of the concurrency handling mechanism in generated applications.
No solution is required. This is a normal outcome of the concurrency handling mechanism in generated applications.
Part VII: Troubleshooting Applications
Application Runs But No Data is Displayed