Hi Mae,
For Material Classification
MARA-MATNR = KSSK-OBJEK
KSSK-CLINT = KLAH-CLINT
KLAH-CLASS
OBJEK-->Object Number
CLINT-->Internal Class Number
CLASS-->Class
For Batch Classification
MARA-MATNR = INOB-OBJEK
INOB-CUOBJ = KSSK-OBJEK
KSSK-CLINT = KLAH-CLINT
KLAH-CLASS