Tech Mahindra — Unable to Offer Letter

Hello Team,

I am having a problem with the Tech Mahindra HR Team. I have qualified HR round and both technical round after that I have received candidature email from HR and I have taken all necessary action on the but after some days they put my application on hold. I just want to reason is the reason behind that why I didn't get an Offer Later?

Please review and let me know the exact reason.

Thanks,
Sushil