Invoice numbers are generated automatically when a reservation transitions to the confirmed stage.
Here we have a provisional booking - but no invoice number - this is because provisional bookings often don't happen:
Next, we progress to the confirmed stage (sometimes but not always accompanied by payment)
The system automatically assigns a sequential, unique and unchanging Invoice Number to the reservation:
Please note - we also assign a date for when it was converted to an invoice (assigned an ID).
Invoice Sequencing
The system assigns IDs in the following, sequential format
INV-YYYYNNNNN
where YYYY = current year
NNNNN = a five-digit sequential number
Dealing with change
What happens if you make a mistake and then go back to provisional?
the Invoice number remains - it can't be unassigned once assigned.
What happens if you cancel a booking?
the Invoice number remains - it can't be unassigned once assigned.
See Also