The Electronic Declaration software for National Authorities (EDNA) is a software tool, developed by the Technical Secretariat of the OPCW that enables the National Authorities to create and submit Article VI declarations in the electronic format.

EDNA, eliminates the need for a paper copy of the declaration, reduces the need for manual data entry and enables faster processing of information stored in the database.

National Authority Chemical Weapons Convention, submits declaration to the OPCW, under EDNA.