Need to enter an Invoice without a PO

When entering a direct Invoice, received error:  Your Permission requires you to enter a valid POY

Munis

Accounts Payable

Invalid Permissions

System Administration > Security > Roles

1. Click Search
2. Enter in Role Key
3. Select Accounts Payable Folder
4. Click Update 
5. Select  PO number entry on invoices, P-Not required,but if entered, PO # must be valid
6. Click Accept