There is an scenario where one BAI code has two different transactions. Only one of the transaction

There is an scenario where one BAI code has two different transactions. Only one of the transaction requires accounting. No further action is needed on the another. In the bank statement accounting, MATCH rule is set up for the first transaction. When bank statement accounting process is run, the process is creating accounting for the second transaction based on the default template that is setup under Bank statement accounting. How to stop it? Can it be done via Map (Data export/import)