No ABAP class specifed for function type in SAP BI

Hi Experts,

while activating planning function types in SAP BI using Transaction RSPLF1, i received following error message

"No ABAP class specifed for function type 0RSCRM_IMP_DEL_DISTR"

It seems there is no abap class available for above planning funciton type.

Could you please let me know how to find the appropriate abap class for this.

Thanks,

Khader