Please don't worry about it.  It is normal to make mistakes. While the APAAR ID isn't always explicitly listed, the NTA opens a correction window for major personal details after registration. You can usually correct such essential errors during that time. Check the guide for the process: https://engineering.careers360.com/articles/jee-main-application-form-correction

Hello,

Yes, you can correct your APAAR ID during the JEE Main correction window, which the NTA opens after the application process ends. During that period, you’ll be allowed to edit specific details like APAAR ID or other personal information.

If the correction window isn’t open yet, don’t worry, your application won’t be rejected just for a wrong APAAR ID. Once the correction window starts, simply log in to your JEE Main portal and update the correct APAAR ID.

Keep checking the official NTA JEE website for correction window dates.

Hope you understand.