The OJEE registration form issue you're facing is likely because the OJEE exam is not held for admission to B.Tech programs in Odisha. Instead, admission to B.Tech courses is primarily based on JEE Main scores, especially in government engineering colleges.

However, there's an exception for lateral entry into B.Tech programs. A special OJEE exam is conducted for students who have a diploma in engineering and want to take lateral entry admission into B.Tech courses.

If you're looking to pursue B.Tech, you can definitely write the JEE Main exam. In fact, JEE Main scores are accepted by many engineering colleges across India, including those in Odisha.

To clarify, here are your options:

- JEE Main: Write the JEE Main exam for admission to B.Tech programs in Odisha and other states.

- Special OJEE: If you have a diploma in engineering, you can appear for the special OJEE exam for lateral entry into B.Tech programs.

I hope this clears up any confusion. Let me know if you have further questions!