What do we mean by a "reconciliation difference" and what do you do with it?

A reconciliation difference occurs when the bookkept amount doesn't match the amount from another source, for example a bank statement or an appendix. The difference may be due to a transaction being posted with the wrong amount or to the wrong account. It can also be due to the fact that you have missed posting a transaction or that a transaction has been posted several times. Another reason could be that transactions have been posted in the wrong period, for example if the payment on an invoice has been posted in January while the invoice itself is posted in February. To solve a reconciliation difference, you need to either correct the bookkeeping with a correcting closing entry or correct the appendix, depending on where the problem is.