Select data from sap tables RFM_PSST_GROUP
Display SAP table details
RFM_PSST_GROUP - PSST Group, Characteristic Values
RFM_PSST_GROUP_CHARAC_CNVRT - the group with converted characteristics
RFM_PSST_GROUP_ID_RANGE_S - Select Range for PSST-Grouping-ID
Return Table index