In a collective invoice, the items from invoices for one or more events are summarised.
Example: A customer pays all oustanding individual invoices once a month.
The partial invoices must not yet have an invoice number or have been marked as closed. In addition, they must all have the same invoice address and cost centre.

Create a standard invoice segment and then convert it into a collective invoice.

1. Open the event in which the collective invoice is to be created.
   Example: your customer's last event per current month
2. Create a new invoice segment and enter a unique name.
   Note: Items cannot be inserted directly into this invoice segment.
3. Right-click the segment in the side navigationt and select  Convert to > Collective invoice.
4. Save the event when prompted.
5. The collective invoice input window opens. Sub-invoices can be added to the collective invoice in the lower part of the window.

Check out our YouTube Tutorial on Invoice to reminder for more details. (German only) .