RFC lookup problem

Hello Expert

I am using a RFC lookup in my scenario . I am using a sap FM (CLAF_CLASSIFICATION _OF_OBJECTS ) . In this FM some import parameter like (CLASS, CLASSTYPE, OBJECT, CLNT etc) and get some data from two table (T_Class, T_OBJECTSDATA) .and I tested the FM in ECC data is coming in both table .

Once i am using the RFC lookup in PI , I pass some input parameter and get received only one table data (T_CLASS) . data is not coming form T_OBJECTDATA.

Please help me on this issue

Regards
P .Singh