Movement type determination and Availability Check

SM30 - Table View - V_TVEPZ -> Assign schedule line categories

First check the Proposed schdule line category (SchLC) - double click on the line item

VOV6 - Maintain the schedule line categories - double click on the line item

For example, you can control the default returns movement type.
651 - two steps - with a transfer posting using 453
653 - one steps - direct post to unrestricted used

Control the Transaction Flow (tick to activate the function)

transfer of requirement
for availability check for sales
production allocation active