Common Mistakes to Avoid in JEE Main Registration [2027]

The National Testing Agency (NTA) has opened the JEE Mains 2027 Session 1 application form filling window on 24th October 2026. JEE aspirants planning to register themselves for the JEE Mains January attempt should be aware of the NTA’s new registration rules and the common mistakes usually made by candidates while filling the application form.

Even a small error can lead to rejection of your JEE application form. So, read this post till the end before you proceed with the JEE Mains online registration and fill out the form successfully using the complete JEE Main application form filling steps explained below.

JEE Main Registration 2027: What’s New this Time by NTA

NTA has made major changes to the JEE Main application process this time. Applicants must update their Aadhaar card photo if it does not match their current face. This year, candidates must also sign in with DigiLocker, which is mandatory, so every applicant needs a DigiLocker account. A live photograph will be captured during form filling, and the background should be light. If your photograph matches your Aadhaar card, then only the form will proceed to the next step. Applicants are advised to apply for the EWS or cast certificate if they don’t have yet, to avoid any issues in the future.

Big Mistakes Made in JEE Mains Registration

Mistakes in your JEE Main registration or application form can lead to its rejection after submission. To avoid trouble and errors while filling out the form, candidates should be aware of the silly mistakes that many students make. So, applicants should go through the common mistakes mentioned below and avoid it during registration.

Filling More Than One Form

Applicants are advised to fill one application form for JEE Main 2027 examinations. Registering more than once leads to your form rejection.

Mistakes During Live Photo

During the live photo don’t wear glasses, a cap, or a mask. Make sure that your face is visible clearly and the background is clear.

Not having a DigiLocker account

During JEE Main registration, applicants must have a DigiLocker account. Creating a DigiLocker account is simple, and you can sign up using either your Aadhaar number or your mobile number. So make sure you set up your account before you begin the registration process.

Not entering correct details

Be careful while filling the JEE Mains form; keep all the required documents with you and submit the details without making any error or spelling mistake. Make sure to enter the name, date of birth, and other personal and educational details the same as on your Class 10 marksheet. As one wrong detail can create issue in digilocker verification. Always provide your own e mail ID and mobile number to get further updates.

Not having a Category Certificate

Cast or Category certificates for EWS, OBC, ST, SC or other reserved candidates is necessary. So don’t miss to submit the cast certificate or certificate number. Applicants don’t have the recent cast certificate apply for it now to avoid issues later.

Exam Centre Choosing mistake

Chossing the exam centre far away may create issue on the exam day. So, applicants are suggested to select the nearest exam centre while filling the JEE Mains form. Remember that your home state is considered the state where you passed Class 12.

Not Remembering Password 

During the JEE Main registration, applicants need to set up a strong password and keep it safe. Many students forget it later, which creates issues when logging in and checking the status, making corrections, or downloading the confirmation page. So, always write down your application number and password in a safe place for further need.

Not Choosing the Appropriate Question Paper Language

As we all know, the JEE Main exam paper is available in multiple languages. So, select your preferred question paper language carefully, as during the exam the question paper will be available in your chosen language.

Not Uploading Documents in Correct Size & Format

Upload the documents correctly and in the right format. Here is the correct size to upload the photograph, signature, and certificate(s). 

• Photograph & Signature in JPG/JPEG format & in size between 10 kB to 200 kB.
• Signature 
• Scanned copy of Class 10 or Equivalent Certificate/Marks-sheet & other certificates should be in JPG/JPEG format & in size between 50 kB to 300 kB.

Choosing the Wrong Paper

JEE Main has different papers for different courses, such as Paper 1 for B.E./B.Tech, Paper 2A for B.Arch, and Paper 2B for B.Planning. So, applicants are suggested to select the paper that matches your course.

Payment regarding errors

It is compulsory for all applicants to make the online payment for the final submission of the form. Make the payment only through online mode using Net Banking, Credit Card, Debit Card, and UPI. Make the online payment from NTA official portal to avoid any scam or fraud.

Skipping the Final Preview of the form

After entering the details and filling the JEE Main application form, you must check the details again and verify the information. In case if you make any error in the application form can cost you for correction. 

Forgot to download confirmation page

Don’t forget to download the confirmation page and take a printout of the page after the submission of the form for future use. As during the document verification, the application form is also required.

Waiting for the last date

Applicants waiting for the last date to apply for JEE Main 2027 attempt are suggested to complete the registration process as soon as possible. Because at the last time there is high traffic on the website and due to technical issues, sometimes the application forms are not submitted. 

New Documents List Required

Applicants must have the following documents to apply for JEE Mains 2027; the document list is mentioned below:-

• Recent passport-size photo
• Signature in JPG Format
• Class 10th marksheet or equivalent certificate
• Category Certificate Number for EWS, OBC, ST, SC, etc. candidates
• Scanned copy of disability for PwD candidates
• Passport copy for NRI candidates.

Step by Step Process to Fill JEE Mains 2027 Application Form

JEE Mains 2027 application form window is live now; eligible candidates can complete their registration and submit the form online using the steps explained below:-

Step I: Registration

1. Visit the NTA official website, which is https://jeemain.nta.nic.in.

2. Now, from the Candidate Activity section, click on the link “Online Application Form for JEE (Main) 2027 – Session 1”.

3. Then a new page will open on the screen.

4. Click on the New Registration and read all the details.

5. Now enter the asked details and create logn details. 

6. After fetching the details, your registration will be successfully done and Application Number and Password will be sent via SMS or E Mail.

Note: Candidates who have registered already can complete their application form filling process directly by submitting the login details.

Step II: Apply Online

1. After logging in, an application form page will open on the screen.

2. Fill up all the asked personal and educational details.

3. Upload the required details in the required format and size.

4. Take a preview of the form and click on the Submit option.

Step III: Online Payment

1. After submitting the details, the next step is online payment.

2. Make an online payment using UPI, Credit Card, Debit Card, or Net Banking.

3. Make the online payment from the NTA official website within the given time.

4. Download and save the confirmation page for future use.

Conclusion

Finally, NTA has started online registration for the JEE Main 2027 January session on 24 October, and it will end on 22 November 2026. JEE aspirants can now register and fill out the application form. However, many students make mistakes during registration and form filling. To avoid these errors, keep your documents ready, enter every detail exactly as it appears on your Class 10 marksheet and Aadhaar card, and check the form carefully before you submit. 

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