Customer credit amount transfer

Is there a way that one could transfer a credit amount from one customer to another customer?

For example, if the customers are related companies, and Company nr 1 have a credit amount and company nr 2 have an outstanding debit balance. The customer gave written permission to allocate Company 1's credit to company 2.

Will appreciate your help since the normal Journal entry are not capable of doing that, since it does not post to specific customer only to the Debtors Control Account.