Availability check

Hi,

In scope of check 02-PP I have unchecked Incl. production orders Do not take into account. Assigened availability group 02 in MMR of finished material. There is no (zero) stock for finished material in unrest. use. There is production order of quantity 200 for finished material.

I have created PIR of quantity 300 in demand management. Run MRP.

System has created planned order of quantity 100.

Now issue is as per my understanding system should create planned order of quantity 300 as production orders Do not take into account.But created planned order of quantity 100

Could anyone explain why?