Please be aware of the different systems that are used by observer organizations for
admission, registration, and side event and exhibit applications.
• Online Admission System
(OAS) Function: For new organizations to apply for admission as
observers to the UNFCCC process. Please note that already-admitted observer organizations are not
required to use this system as, in accordance with FCCC/CP/1995/7, paragraph 22, organizations, once
admitted, are eligible to attend future UNFCCC sessions and do not need to reapply for
admission. Logging in to OAS: Applying organizations must create a new account in order to use
the system. Following the review cycle, eligible organizations that are formally admitted by the COP
will not be required to use the system again. User Manual:
https://oas.unfccc.int/oas/UNFCCC_Online_Admission_System_User_Manual.pdf
Help desk for technical questions: oas@unfccc.int