How to make payment with the bank account from other entities?

Summary:

We have some small entities with no bank account, and we will use the bank account from another entities for payment on the invoices.

Seems the system does not allow us to add business unit in the bank account because the business units are from another legal entities and their ledgers are different. The system also not allow us to create a new bank account with the same combination of bank, account number and currency.

Any suggestion how to handle this case? Thanks.

Content (required):

We have some small entities with no bank account, and we will use the bank account from another entities for payment on the invoices.