Hi Iliane,

You can reverse the sales receipt (SR) transaction with a sales payment (SP) transaction.

To refund the SR you must post a customer refund. The customer refund remains outstanding until you receive a new payment for the invoice.

To reverse the sales receipt with a customer refund:

1. Customers > Refund > complete the Customer Refund window as follows:

BANK A/C REF - Choose the required customer

PAYEE* - Choose the required bank

TAX CODE – Standard VAT use T9 / VAT Cash Accounting use the same tax code as the original sales receipt.

DATE* - Enter the date of the refund

AMOUNT - Enter the amount you are refunding

*This information is mandatory. 

1. Save > Close. 

1. Optional - To age the refund to the date of the original invoice, post a Customer batch invoice on the date of the original invoice and a Customer batch credit on the refund date, allocating it to the Customer refund. 

You can now post the new cheque against the outstanding SP and then reconcile both the new SR and the SP in your bank reconciliation. These two transactions will cancel each other out in your bank reconciliation, meaning the net balance of these is £0.00

Full info on this here.