We have a requirement.
1) PO creation for back dates ( past dates) must not allow.
2) If necessary to create PO for past dates then control option has to be given to get for last 1 week or 10 days as we give option to make for user exit.
PLEASE revert back ASAP
if there are standard options to do the same.
if it must be done through Z transactions only, then pls give process flow.