From "View invoices" you check everything issued by the box: every payment generates its invoice (standard or certified depending on whether TicketBAI / VERI*FACTU is on).
Box billing
Invoices
How it is organised
This month and last
Invoice by invoice, with its number, member, amount and status (Sent, Pending, Sending error, Cancelled), and PDF download.
Previous
One zip per month with all that month's invoices. It is generated on the 1st or, if it does not exist yet, when tapped, and saved for next time.
Corrective invoices
They appear with a reference to the original invoice they correct.
When a box is closed, certified invoices are kept for as long as the law requires, but download them first if you need them.