Hi Raju,
Please can you check if "Basic Settings at Plant Level" is activated with appropriate details, in case if you are activating QM for the first time.
If both the inspection types "11" and "06" is added in your material master - QM view, please can you check inspection type "Active" indicator is ticked.
Also can you check with your technical team if any other enhancement is active which is blocking your inspection lot creation. At the same time your can also check customer exit QAAT0001.
Thanks,
Arijit