Hi gcamm,

What version of BankRec are you using? Where did the transaction originate, from BankRec or retrieved from another module such as Payables?

There is an option in the BankRec Company Profile to allow or disallow duplicated reference (check) numbers. If this is enabled, and a check number or a deposit has already been posted, then attempting to post that reference/check a second time will give that error. Investigate your transactions in BankRec to confirm this.

A simple solution is to disable that option, which will allow posting, but that may not be the most desired choice for you. If not, you would have to edit or re-enter the transaction with a unique reference/check number.