You can provide some additional information about payment on this tab. 
The "Bank Payment (create)" form. The Additional Information tab
Specify the number of the incoming document in the In. Doc # field and the date in the From field.
In the Transaction Remarks field text box,, specify any relevant details.
The Reason for Out-of-Scope VAT text box, appears if the Tracking of Out-of-Scope Purchases option is selected on the Administration > Settings > Taxes form. Select the appropriate reason if the transaction is out of VAT scope.