My deadbolt and door key, and the bed doors on my Roo 23SS hybrid, all use the same key. The external hatches are the CH-751 key.
If I lock the deadbolt with that key, though, the RV shops claim they don't have a key to open it so when I leave the trailer I just lock the latch. (Hope that makes sense.) I don't have a separate key that just locks the main or bed doors.
2006 Roo 23SS behind a 2017 Ford Expedition