You have to provide a proof of enrolment for the academic year 2023-2024. A scan of the matriculation fee for the academic year would be preferred. It will also serve a certificate issued by the Secretary of your institution, which indicates the studies you are taking, and in which it states that during 2024 you are an official student at that centre. Scholarship documents or post-doctorate contracts will not be accepted. Post-doctoral researchers will need to register in the Conference as professionals.