Deleting a wrongly created PERNR whose PY has not yet run

Dear Guru's,

Two of our PERNRS are uploaded wrongly . The employees were not involved in any PY run as they were deputed out.

Now when the employees are returning from the Deputation , it was realized that the PERNRs uploaded earlier was wrong .

No payroll has been run for the employees . Now when I am trying to delete the PERNR to assign the correct one , system is not allowing.

Pls give the steps .

Best Regards,

Alok