What Does Duplicate Invoice in Vbill Mean?

Overview

When attempting to create a new Vbill, you receive the error 'DUPLICATE INVOICE ON BILL ID...'.

Invoice numbers used in Vbill must be unique; you may not use a previously used invoice number. If you receive the above error, Vbill is indicating that the invoice number you have chosen was previously used on the indicated Vbill. 

Please use a different invoice number to continue creating your Vbill.