I recently opened an Indian bank account along with a home loan, and when they disbursed the first installment of HL via DD, they credited the amount to my account and then took the DD from it. I got this SMS for the first time. After that, when I transferred money to the account a couple of times (for fees), I got the SMS again.
My BM told that I don't have to worry about it and that the message will stop coming after Mar 31st and it's just a credit threshold message and the account will not get frozen.