Hello,
There is a phenomenon which makes me a little confused, say, I have a part no and a SA for this part, in MD04, I can see there are schedule lines generated by MRP, at the bottom, there is a PO, the PO date is 5/18, also the system gives the rescheduling date at 2/23. Now, my confusion is, if I look at the date point 2/23, the available qty is negative, there's no schedule line at that time, the latest schedule line is on March, for sure, if I change the PO date by system proposal to 2/23, the available qty looks no problem. I know, PO date is firmed, system doesn't change it automatically, but schedule line is not, why system doesn't generate a schedule line at 2/23, in my mind, it should generate a schedule line at that time, and reduce the schedule qty at May, because in May, there is a PO which can conteract the schedule line qty.