Yes, you can typically update your SAT registration details, including your SAT number, during the correction window provided by the College Board. This window allows you to correct errors and update personal information. However, it's important to review the specific guidelines and deadlines provided by the College Board to ensure you make the changes within the allowed timeframe. For more personalized guidance and assistance with the process, you might consider contacting Invicta Career Consultancy, as they can provide expert advice and support tailored to your situation, While there are other options available, hence you can pay a visit to their website (icclearning.com) and consult with them for better guidance. All the best to you.

It's ok if u have done it wrong later on when u r putting ur details it will ask you if you have more than 2 SATS id u can put the correct one that time