I have some questions about billing service items, how do you suggest you resolve the following points:
Invoicing of shipping costs: I have currently added a service item ‘shipping costs’ to my sale. This service is billed as soon as the order is confirmed, whereas it should be billed when the goods are shipped.
Invoicing installation costs: In a quote with goods, I have added a service line ‘installation costs’. the equipment is delivered in several installments and for each delivery part of the installation costs must be invoiced.
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