When the City Ledger makes payment for all unsettled bills, Hotelier can add this payment using payment option as shown in below screenshot. Once ledger payment is received, due balance will automatically get adjusted, however, payment need to be posted to respected folio/invoice in order to settle the due bills.
Payment Posting: Payment posting means to post received payment into unsettled bills for particular city ledger account. Thus, it helps to track which city ledger postings are pending to be settled. The net due amount will automatically get adjusted once pending bills are settled. Please refer below screenshots: