"Sales order '%1', line '%2' is historical and contains installments. Returns are not possible." Why do you receive this notification and what can you do to resolve it?

For the Sales delivery note report (8402), the (hidden) parameter 'Copy' is available. If this parameter is checked, "Copy" is added to the report's title.

In MKG, it is possible to invoice in installments. This article explains how to create an installment plan, which you can then apply as a template to sales quotations and orders.

In some MKG modules you will find the navigation tree. The navigation tree is a tool that allows you to overview a process and all underlying components at a glance. This article shows where to find the navigation tree and how to use it.