Doesn’t pertain:
“Accession
“Accession” is the act whereby a state accepts the offer or the opportunity to become a party to a treaty already negotiated and signed by other states. It has the same legal effect as ratification. Accession usually occurs after the treaty has entered into force. The Secretary-General of the United Nations, in his function as depositary, has also accepted accessions to some conventions before their entry into force. The conditions under which accession may occur and the procedure involved depend on the provisions of the treaty. A treaty might provide for the accession of all other states or for a limited and defined number of states. In the absence of such a provision, accession can only occur where the negotiating states were agreed or subsequently agree on it in the case of the state in question.
[Arts.2 (1) (b) and 15, Vienna Convention on the Law of Treaties 1969]
For more glossary terms, visit the UN Treaty Website’s Glossary of terms relating to Treaty actions.”
Does apply: “It has the same legal effect as ratification.”
It is a ratified Treaty. The Budapest Accession is an accession to the ratified treaty.