Changes made by Council Decision of 30 April 2004 amending the Decision of 13 September 1999 laying down the conditions of employment of the Secretary-General of the Council of the European Union, High Representative for the Common Foreign and Security Policy, and the Decision of 13 September 1999 laying down the conditions of employment of the Deputy Secretary-General of the Council of the European Union (2004/547/EC, Euratom)
EU Decision 2004/547
The legislation Council Decision of 30 April 2004 amending the Decision of 13 September 1999 laying down the conditions of employment of the Secretary-General of the Council of the European Union, High Representative for the Common Foreign and Security Policy, and the Decision of 13 September 1999 laying down the conditions of employment of the Deputy Secretary-General of the Council of the European Union (2004/547/EC, Euratom) changes, newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.