GST errors are common with Reckon, some invoices have serious issues and have aggravated some of my customers to the point of closing accounts. I have one currently who wont pay until the 14 cent error is corrected. My accountant said good luck, he recommended putting in a correction line at the bottom of the invoice. I have spent 3 days on this and it seems like it is not going to go away. That's a fundamental floor and needs to be addressed.