Requirement is to exclude a MRP Element of specific" ORDER TYPE" in MD04.
PrdOrd 00000xxxxxxx/Order Type Receipt/Reqmt Available Qty
1000
80 1080 (To show as 1000 EA)
Ignore the 80 EA from Receipt/Reqmt for the Order type.
(or) Exclude MRP Element data for the "ORDER TYPE" in MD04.