Linking PRs with no PIM items with Blanket Agreements

Summary:

We need to create requisitions without filling the item field, then create PO and link it with a Blanket Purchase Agreement.

-The scenario of providing the supplier item that corresponds to the BPA description-only item when creating the requisition in order to source the requisition/PO to the BPA or item configured in PIM ( added in a BPA ) does not satisfy our business requirement as business users that create requisition will not be aware of the supplier item.