On the right-hand side of the order entry screen in the "Additional information" section you will find a checkbox "Print an additional B2C returns parcel label for each parcel". If you tick the checkbox, your respective shipping label plus an additional B2C returns label will be created.
A second option is via the "History" tab in DPD Print. Select the shipment for which a return label is to be created by left-clicking. Right-click the order again and select B2CReturn.
Home / How can I create a return label (B2C return) in DPD Print?