It is compulsory to hold a valid FAI sporting license from your National Airsport Control Organisation (NAC) to participate in all FAI-sanctioned events (Category 1 and 2). Please note that the FAI Sporting Code - General Section, Item 8.1.3 says: A Sporting Licence shall only be considered issued and valid, if the holder is listed on the FAI Sporting Licence database by the NAC that is issuing the particular Sporting License.
If you have any questions, please contact the FAI.