User service orders to invoice goods and services from the Service module. Returned customer claim documents have a simple invoicing function as well.

It is often the case that a customer claim has to be billed, despite a valid warranty. The causes can be:

• improper handling,
• upgrade with better components, etc.

It this case, you would need to issue the customer an invoice as if the upgrade would be a regular sale. Returned customer claim documents have a simplified invoicing function for exactly this purpose.

This "simplified" invoicing can be done in two ways:

• by entering the billed price into the Price field in the line of the item being issued; or
• by adding another line, like with issued invoices.

If invoicing services, these invoices have to be properly posted and the tax must be entered into the tax records. That is why such document types must have both Document and Service-Customer selected under Issue. For automatic posting of invoices issued and the VAT account,  issued invoiced and issue from service must be selected.

The disadvantage of such invoicing is that stock at the service warehouse is (apart from receiving to and issue from service) affected by:

• transfers from the main warehouse, which are the prerequisite for issuing from the service warehouse;
• invoiced goods that are issued from the service warehouse.

Thus, the warehouse card does not show which items are in the service warehouse awaiting repairs or replacement.

In such cases, it is recommended to use the Service Order module.