BAPI_CLASS_GET_CHARACTERISTICS doesn't show all values

Hi,

I am trying to get a list of all possible values for a class.

When I look at it in CT04, I can see more possible values than I get, when I use

BAPI_CLASS_GET_CHARACTERISTICS

I found the values in CAWN but when I try to save the classification with one of the values, I only can see in CT04, I get the error, that it is not a valid value.

Does anybody have an idea, what could possibly go wrong?

Thanks

Sven