Can duplicate Vendor Invoice Numbers be entered for a payment?

Duplicate Vendor Invoice Numbers can be entered for a payment, but only if they are using separate vendor codes.

Example:  Target Corp and Walmart could both submit an invoice of 123456789 and both would be paid for that invoice number because they are separate vendors.  If however, 2 people (or one person for that matter) enter 123456789 for the same vendor (ex. Walmart) the first payment made would go final and any additional attempts to submit documents or approve documents with the vendor invoice number for Walmart would error out.