Fee has to be paid only though 'SBI collect'. https://www.onlinesbi.com/sbicollect/icollecthome.htm

Select Payment category as 'Academic Fees (For All Degrees)'.

Enter your M.Tech application number as 'Enrollment No'

Select 'Payment Category' as any one out of 'GEN/OBC' or 'SC/ST/PH'

Carefully save the payment receipt after the payment (in PDF format)

Once a candidate pays fees, he/she will have to send the receipt in PDF form for confirmation to respective HOD email id.