If eBay changes or newly publishes return reasons, you can import these via a special function in PlentyONE.

Synchronising return reasons

1. Open the menu Setup » Markets » eBay » Data Exchange » Tab: Miscellaneous.
2. Use the function Synchronise return reasons there.

You must then link the newly imported return reasons as described in the menu Setup » Markets » eBay » Settings » Tab: Return settings.