xabi200.SKAZ is 100% right on this.
You CANNOT add a type rating to a validation.You can only 'import' the types from your original licence. I hold a JAA and SA com and am fairly clued up on this; want comformation? Call Clauida at CAA to confrim this. The German chap operating in Algeria sounds completelty illegal.
Just because the rating appears on the logbook and not your licence does not matter. The SA CAA will withdraw the validation if you attempt to abuse it in the manner that your German collegue appears to be currently doing so.
Good luck.