To create the Expense report getting error " Enter a name other than your own as the approver."

Hello All,

Supervisor is trying to create the expense report behalf of his employee and he is getting the error "Enter a name other than your own as the approver."

Oracle Application : 11.5.10.2

Delegate access has given to supervisor through Oracle sysadmin User.

Could you please suggest me on this issue.

Regards,

Venkat.