Return of unsettled transactions- Return GL accounting changes

Return GL entries for both Original Payment/Collection and Return Transaction generate one accounting xml to FCUBS containing entries for both original transaction and return transaction provided system parameter MULTI_TXN_ACC_REQ_ALLOWED is set with value as Y. If the value is set as N, existing flow of generating separate accounting entries for both Original txn and R-Txn will continue without any changes. Messaging of Return transaction will be done on completion of accounting if MESSSAGING_AFTER_ACCOUNTING system parameter is set as Y.

EC-EA Merger changes are not in scope.