Use the Open Item Maintenance window to mark a transaction as disputed or not disputed.
In the Cust Number box, type the document number starting with a period and then press ENTER. For example, if the document number is 12345, type .12345 in the Customer box and press ENTER.
Click the arrow next to the Disputed box.
Select Yes to mark the transactions as disputed.
Select No to mark the transaction as not disputed.
Click Change.