what is the difference between forward and backward scheduling?
please explain with simple example
In our scenario we save monthly requirement of x for the march 08 in md61 on 01-03-2008.Planning run md01 for x 1 3 1 1
planned order generated for x ( in house time is 4 days) and PRs generated for the all dependent requirements(maintained gr processing time and planed del time for all) as per BOM.
But red indication is comming saying
start date in past for x
finish dates in past for all dependent requirements
Please suggest some solution