BA-APVAST

Is it true or fake?

Received sms Dear Esteemed Customer, as per TRAI, mobile instrument with invalid IMEI is not allowed in any mobile network. To know IMEI dial *#06# and to validate send SMS as KYM 'IMEINUMBER'(as received) to 14422. If found invalid IMEI, kindly change the instrument with valid IMEI for uninterrupted service. For more info dial 1503.Should I fallow the instruction?