Message Number list used by SAP ABAP Program L0NWCH20M00 (L0NWCH20M00)
SAP ABAP Program L0NWCH20M00 (L0NWCH20M00) is using
# Object Type Object Name Object Description Note
     
1 Message Number  N2 - 257 Service groups cannot be selected
2 Message Number  N2 - 831 Service & does not exist
3 Message Number  NJ - 003 Please enter a valid service catalog