hi , Phanikumar
material changes (mm04) is updated later than SO creation times(VBAK), but some SO is updated which is my doubt.
eg: material changes value(MVKE-KTGRM) from "01" to "02", some SO value( VBAP-KTGRM) is also from "01" to "02", but others SO value( VBAP-KTGRM) still is "01"