For Customers who are Owners of the Inventory, you can mark a sales order as an Order Type of Shipping. This type of sale is not sent to accounting when confirmed and can be confirmed without a price set for the allocated items.
Shipping type sales order setup
In Master Data/Owners, all Owners for which you will be creating Shipping Orders should be setup. .
An Order number series for Shipping should be created in Configuration/Orders/Number Series.
The Configuration option - Configuration/Orders/Setup - Show Owner on PO and SO in P & S - must be set to ON in order for this Order Type to be available.
Creating a Shipping Type sales order
Create a new Sales Order for the Owner and choose a Type of Shipping in the Sales Order creation pop-up.
Assign the Owner on the General tab of the Order.
Allocate the inventory that is marked as belonging to the designated Owner.
You need not but can add a price to the sales order.
When the order is confirmed, it will be available in the sales order list but it will not be invoiced and sent to accounting.