This problem might occur because of inconsistencies in the data that was captured in the report. To investigate and fix this problem, please follow the steps below:
Go to Report, Transaction List, and select Invoice Knock Off Error listing.
Print a copy of this report.
Click Fix & Reverse on each of the items in the list.
Exit.
Go to Report, Transaction List, Payment Listing, and select Payment Knock Off Error Listing.
Print a copy of this report.
Click on Fix & Reverse on each of the items in the list.
Exit.
Go to Transaction, Payment.
Click on Search, and search by Receipt No. Search for the Payment No of each entry reversed from the above action and knock off entries again.