Is it possible to process a payment across legal entities within same ledger

Our client's requirement is to process a single payment process request across all business units all legal entities within a single ledger.

They will use a single internal bank account with the BU access configured for all the business units to define the different BU's Cash Account/Cash Clearing Account.

They want each payment to be accounted to each BU's Cash Clearing Account, therefore a Shared Service Payment Business Unit model cannot be used.

When we process the payment with invoices across 2 legal entities, for example:

• Internal bank account assigned LE A (which is linked to BU A).
• In the payment, Invoice for BU A (linked to LE A) and invoice for BU B (linked to LE B) are picked up for payment, the invoice that belongs to a legal entity that is different to the legal entity assigned to the internal bank account (i.e. invoice for BU B/LE B), encounters a payment validation error "1. One or more payments were rejected by the source product.".