we assign movement type in scheduleline category.

boss

movement type are 2 types
1-inward
2-outward
so,
when mat. is ready to moove anywhere for some transction 
there you assign movement type.

In GRN preparation

Movement Type is assigned at schedule line. As is is related
to transfer.

601- Standard Movement Type.

As per the requirement we need to mantain the movement type 
to work that movement type is inturn assigned to ur item 
category then once u raise that particular document type it 
automatically act acording to that.