Customer return lines are created from the originating sales order lines. After you save your customer return, you can create customer return lines by selecting the required sales order lines from the initial sales order. Only lines associated with the originating sales order are available to select. You can select all the sales order lines at once, or select individual lines as appropriate.
If you want to use the Classic mode Customer Return Lines Related List you must add it to the Customer Returns layout.
All of the sales order lines are selected by default when you click Create Customer Return from the sales order. You can change the selection of sales order lines as detailed below. However, a customer return must have at least one customer return line associated with it before it can be submitted for approval.
To change the selection of sales order lines you can do the following:
Deselect the Select All checkbox adjacent to the Actions column on the sales order line items list and then select the line items you want to add to the customer return.
Deselect individual sales order line items that you want to remove from the list of selected line items.
To add a sales order line to a customer return:
Select the sales order lines you want to include in the customer return.
Enter the number of items you are returning in the To Return field.