Translations:Pre-invoicing/6/en
From Marathon Documentation
At the time of invoicing, an automatic deduction of the pre-invoiced is done. The remaining amount is saved to the next time that something connected to the pre-invoice shall be deducted. The system starts with the oldest pre-invoice. If there is nothing that corresponds with the terms for the pre-invoice, the system continues with the next one. A problem can occur if you have both general pre-invoices (not connected to certain plans/orders) and pre-invoices locked to specific plans. When deducting general pre-invoices, the system does not take the locked ones in account but deducts from everything that is possible.