In case of Multiple CPAs and Multiple Punchouts for one Supplier, how to link a Punchout to Supplier

Summary: In case of Multiple CPAs and Multiple Punchouts for one Supplier, how to link a Punchout to Supplier

Content (please ensure you mask any confidential information): The Client Business has a Business Case where they create a new CPA for an existing Supplier every time they create new Supplier Contracts with the Supplier.

For Instance:

Case 1: when the Client Org has a Contract with ABC Supplier (Site A)for buying Telephone units from them and the Contract Has a Contract Purchase Agreement (Agreement A) Linked to it. They also have a Punchout(Punchout A) for the ABC Supplier and Site A. Any REQ created from this Punchout will refer to Agreement A.