Duplicate Payment returned

Hello,

There were instances where we double paid a few suppliers in
error, however, some of these suppliers actually refunded back the moneys into
our bank.

The money refunded back is now sitting as income in the bank
account unallocated. The supplier ledger also needs to be corrected to reflect
that the double payment has actually been refunded back.

Please could you let us know what is the process to be followed
in oracle fusion release13 to allocate the cash received in the supplier ledger so that the income
is allocated and the supplier ledger is correctly reflecting the moneys received.