All applicants have to register online only and fill in their details in the online application form. To fill at online application form candidate need to keep the mobile number. While entering the details an OTP number will be generated and the same will be sent to the registered Mobile number. OTP number is required to enter for completing the registration. A registration slip will be generated on successful registration. Take a printout/Save as PDF of this registration slip and keep it in a safe place. An SMS will also be sent to the registered mobile number intimating that you have registered successfully. The candidate can also view his registered data by logging in using combination of his ONGC Registration ID, date of birth and registered email ID. After logging in, he can also take a printout/Save as PDF of his registration slip.