POS sales can have different statuses depending on the action being done to them. The following list gives a description of the different statuses that can occur.
Booked -> An order completed successfully.
Cancelled -> Order annulled, either with a payment refunded, or without it. If the order has been refunded, it will display as Cancelled(FullyRefunded)
Error -> An order whose processing failed.
Pending -> An order in a temporary state, which will be processed and become either "booked", "cancelled" or "error".
Discarded -> An abandoned order which was started but never completed.