Hello, here I m providing you the details of the MMID Union Bank of India as under:

UBI - How to generate MMID
From Application select - IMPS -> Generate MMID
Alternatively For Sms Channel :
sms MMID to 9223173921.

IMPS
Immediate Payment Service (IMPS) is an instant interbank electronic fund transfer service available through mobile phones/ATM/ branch/ internet banking

IMPS
To avail the facility of IMPS, please register your mobile number with the Bank for mobile banking

You can transfer fund to other bank account through IMPS using the following options
P2A ( Person to Account number)

Using this option , you can send money to any bank account by just entering account number and IFSC code of the beneficiary
P2P ( Person to person)

Amount limits and Bank charges
Amount Limits :
Through SMS – Rs. 5000/- per day
Through application - Rs 200,000/- per day
Bank Charges: NIL