Deleting an invoice is appropriate when:
Deleting an invoice permanently removes it from the system and should therefore be used with care.

The selected invoice(s) will be archived.
It is also possible to perform the same action from the details of one invoice.
Click Actions and select Delete.
An invoice cannot be archived while its status is In Progress, as this indicates that a linked transaction is currently being processed.
If the related transaction is removed from the collection batch, the invoice status will automatically change back to Booked — or to Expired if the due date has already passed.
Once the invoice is no longer in progress, archiving becomes available again.