Hello,
KP means No check in that case no ATP will carried out. Why you need Checking Group for Availability Check as KP? Not sure why you would perform an ATP check against a planned order?
When you perform an availability check for a planned order in the check mode "planning check".
When the components are checked, the relevant checking group from the material master is taken into account.
If you dont do the ATP check for planned order it is same as KP.
Best Regards,
R.Brahmankar