ABOUT AVAILABLE CHECK

Hi, my friends.

In order to  disable the available check functionality in some scenarios, I set up the schedule line category as follow:

in schedule line category:  CP,   I disabled availability check functionality .[please look at the pic 

then I create some order to test if this customizing works

1,  when I create a OR,  system does not  take availability check...it sounds reasonable.

2, but when I create  a CS(  CASH SALE),  I cannot believe the system takes availability check unexpectedly , since the schedule line category is  CP, is the same as it was in OR.

My question is : why the same schedule line category acts totally different in OR and CS.. is there any other factor need to be consider?

thanks,

Michael.