Duplicate Invoices in Different Business Units

Summary:

We have an issue were more than one Business Unit is paying the same invoice. Since it is a different BU we are not getting an error message if we use the same invoice number with the same supplier a second time. Has anyone else encountered this issue and how were you able to address the issue? We have about 40 BUs.

Content (please ensure you mask any confidential information)

Two Business units received the same invoice for transportation charges. The supplier let us know we had paid them twice which is how we detected the issue. In checking this is not the only time we had done this in the past.