You should have a feature in Essentials for when a customer overpays, the additional amount can be applied to their next invoice easily. At present there is no function to process an overpayment exc...
Hi @RAACHBOM
Once you apply an overpayment to an invoice, the extra overpayment amount will automatically be stored/recorded/listed under Sales>Process Customer Returns tab for you to quickly apply to a future invoice. This is the same for bills as well under the process supplier returns tab for Purchase bills entered in the system.
Kind Regards,