Reversing the Bill Liability of a Check/Bill of Exchange in Accounts Payable 
If you have posted the bill of exchange manually, you must also reverse the bill posting to the special G/L account "Contingent liabilities from checks/bills of exchange" and clear the liabilities account (see
Payment by Check and Bill of Exchange). You can make these postings once the due date has elapsed, including any country-specific protest period.You reverse the bill liability by carrying out the following steps from the Accounts Payable area menu:
The system displays the screen Reverse Check/Bill of Exch.: Header Data.
In the field General Ledger, enter the account number of the special G/L account for checks/bills of exchange. Additional selections by due date, document number and customer/vendor account number are also possible.
The system displays the selected bills of exchange. For each bill, the postings are shown from the vendor account and the clearing account for the bill liability.
The system generates a reverse entry for both postings and clears the amounts automatically. The bill liability is marked as cleared.