An SAP Consultant

If you have some duplicated, personnel numbers on the system and the data is not complete.
You try to delete these and get the message  "record cannot be deleted (time constraint 1)".

The fastest and simplest way to delete  employees is to use program RPUDELPN or from PA30, click to Utilities -> Delete  Personnel Number.
Certain infotypes have the time constraint  set so that you cannot delete them which is why it is giving you the  message.
To avoid problems, use the above methods.
How to Delete the  Personnel Numbers created in the Server?
For deleting a personnel number, please  follow these steps:
1. Note down the position to which the  employee belongs..Go to PO13 and delete the relationship of the position with the holder.
2. Now go to PU00, enter the personnel  number and execute. In the next screen, select all infotypes using F7.
DO NOT select one by one infotype and try to delete. Once all infotypes are selected, use the trash can symbol to  complete the delete process.