How do I fix the error ‘User Already Exists with that Contact’ when creating staff accounts?

Go to Settings → Administration → School Setup → User Account Management.

In User Account Management, navigate to the Activated section and check which staff account is activated with that contact number. If not in this year we have to check in Previous year.

If the account does not belong to the correct staff member, go to Transaction → Staff → Staff List, search for the correct staff member, change mobile number or email, and create the account with the correct contact information.