get https://sandbox.sendle.com/api/orders//return
Views the given return order, including the label URLs.
You can get a label using the URLs in this response. The sender can then include the return label in the parcel before it's shipped (because they aren't added to your invoice until they're used), or send the label file to the customer for them to print it out. If the receiver will be printing it, try to use A4/Letter sizes since most receivers don't have dedicated label printers.
If you want a convenient page receivers can read – which includes packaging directions – here are our AU Returns and US Returns articles. After attaching the return label to the parcel, the receiver will need to leave the parcel at a valid drop off location.