Help with rectification of errors problem

wrong entry =1). BR A\C --------------------DR                   

                                   TO A A\C

                          2). BP A\C -------------------DR 

                                            TO A A\C

REVERSE OF WRONG ENTRY = A A\C -----DR

                                                                 TO BR A\C

                                                                 TO BP A\C

CORRECT ENTRY= BR A\C -------------------DR

                                                  TO A A\C

                                      A A\C----------------------------------DR  

                                                        TO BP A\C

RECTIFYING ENTRY = BR A\C ------------------------DR    500

                                                            TO BP A\C                                         500

when a bill of exchage is recorded, bills receivable is debited and the accepted party account is credited. In the entry the accepting party is credited correctly but bills payable account is credited. so we have to first reverse the entry of bill payable by debiting bills payable by 500 and debit bills receivable ( which is ommitted) by 500