FM package issue in a routine

Hi everybody,

I am responded with error below when I check routine in the transformation.

W:(E) Pakage "$TMP" cannot use object "FUNC ZPRODUCT_CLASS " from package "ZBW" in any of the following ways: "Call form/function"

I also checked with se37 and ZPRODUCT_CLASS FM is under ZBW.

Why this error happens.

Ho can I overpass it?

Thanks.

E