if you use cash application, I advise you to deactivate the automatic matching rules of match bank data. Because if a customer payment on the bank statement side is wrongly matched with another Netsuite transaction, it will no longer appear in the cash application. Keep in mind that you must first import the bank statement, launch cash application to create the transactions and match them, then finish with match bank data for the other transactions. In addition, the cash application configuration also depends on the information that you manage to get back with your bank statement. The goal is to create rules in cash application but the name of the supplier or a common value with Netsuite must exist