If you've entered the wrong SAT number while registering for KCET and cannot change it, it is best to reach out to the KCET authorities directly for assistance. They may have a procedure for correcting registration errors. If you're unable to resolve the issue, consider registering again with the correct information. For personalized guidance on navigating this situation and any other study-related concerns, Invicta Career Consultancy can provide expert advice and support, While there are other options available, hence you can pay a visit to their website (icclearning.com) and get consult with them for better guidance. All the best to you.