When Jordan lost the West Bank to Israel in 1967, they just abandoned it. They never asked for it back.
The West Bank is not "occupied territory." The only nation-state with a claim to the territory was Jordan, which abandoned the claim.
The UN split the territory, west of the Dead Sea/Jordan for the Jews, east for the Arabs. The Hashemite Kingdom of Jordan was the designated Arab area. If memory serves, King Hussein’s even more slippery eel father suggested the split, but then didn’t abide by it. The reason for the pre-1967 border was, the Jordanian army was tough, held on to eastern Jerusalem (not East Jerusalem as the PLO and other Arab / muzzies / media shills often have it) and then ethnically cleansed it and did the same with the “west bank”.