While GATE doesn't explicitly mention this as a strict rule, the system is designed to prevent duplicate registrations. Having the same name, papers, and credentials with different contact information suggests a potential attempt to circumvent the rules or create multiple chances for the same candidate.

It's highly unlikely that GATE will offer you the option to choose one registration and reject the other. This would create inconsistencies and potential loopholes in the application process.

It's best to contact the GATE authorities directly to confirm this and get their specific guidance on the situation. They can provide you with the exact reasons for the rejection and any potential remedies.