Is G5L the same as G30?

I saw in an official German car registration document that the car model was officially classified as BMW G5L 530e. I was told that G5L is a long wheelbase model, but that would make it G38 (the Chinese market model). Googling for G5L brings up many websites (none of them Chinese), typically for rims, and they usually write something like G5L (G30). Does anyone know what G5L is? Thanks.