Hello Nico,
As per my opinion if your client is already using Premium Business Central Licensing then you can solve this query. Since the device remains the property of the customer and there's no purchase order, the best way to handle the goods receipt is by using the Service Management module. You can create a Service Order, register the incoming device as a Service Item, and assign it to a bin location in your warehouse. This allows you to track the device physically without affecting inventory ownership. When the repair is complete, you can use a Sales Order to post the shipment and invoice the customer for the repair service, not the item itself.
In case the repair is unsuccessful and the customer returns the device for rework, you can create a Sales Return Order to record the receipt of the item again. Although the return and follow-up sales order would have a value of 0, posting them is still valid and commonly used for proper documentation and process closure. Alternatively, if you're using the Service Order, you can manage the rework within the same order or create a new one, keeping the entire repair history consolidated. This ensures accurate warehouse tracking, maintains customer ownership, and supports end-to-end service management.
Hope this will help you to achieve your requirement!
Regards,
Mansi Soni