How do I enable collective bills for customers?

Steps

1. Open the entry of an existing business partner or add a new one.
2. Go to the record tab “Customer” at the bottom of the page.
3. Open the advanced edit menu of the customer line.
4. In the field Aggregationrule Customer Invoices, set the desired aggregation rule.

   Note: For the standard case select “invoicing-agg-std”.

5. Click “Done” to apply the changes and close the advanced edit menu.

Explanation of the Rules

Example