Is it possible to prevent invoices for specific BU not to interface for IDR?

Summary:

We would like to have invoices accidently sent for a BU by a supplier not be interfaced from IDR

Content (please ensure you mask any confidential information):

BU A creates and receives the BU B PO’s, but we do not pay their invoices. Occasionally vendors are confused, and they will send BU A BU B's invoices. We would like to stop those from matching and if possible, auto delete in IDR.

BU B's invoicing and payments is currently being handled outside of Oracle.

Version (include the version you are using, if applicable):

25C

Code Snippet (add any code snippets that support your topic, if applicable):