Hi Anneli,

If you Edit (or View) the Customer in question, and go to the Transactions tab within the customer, you will be able to look at either Current or Historical transactions. Those in the 'Current' list could either be outstanding or paid - you can tell this by the Current Amount being non-zero or zero (respectivelt). Those 'Historical' transactions must all have Current Amounts equal to zero - they could not have been purged to history if they were not. If you find that a historical transaction has a current balance NOT equal to zero, this is an error.

Historical transactions cannot be modified (ie adjusted). Perhaps there was an integrity error found and Rebuild run, causing a balance to be added incorrectly.

Do you use BankRec and the NSF check reversal funciton?