When a customer orders on our IshopFood platform, the order is first recorded in our servers, and is finally sent to the restaurant's POS system. The original invoice represents the subtotal WITHOUT taxes (here GST and QST). Taxes are added when printing the customer duplicate.

It may happen in rare cases, that the amount on the duplicate invoice and the original invoice is different as below:

This situation will be resolved by contacting the supplier of the POS system (Master D, or Veloce for example) in order to resynchronize the taxes when the duplicate is printed.