In some cases, a refund can correspond to several POs.

For example, we have created 3 purchase orders for the vendor X. We received, from this vendor X, a single refund for the 3 POs. In this case, we would like to assign several POs to a single credit note.

Currently, only one "source document" (PO) can be associated with the refund.

Do you have some tips or advices for dealing with this kind of use case (sort of "collective refund") ?