Changes made by 99/558/EC: Commission Decision of 26 July 1999 amending Council Decision 79/542/EEC and Commission Decisions 92/160/EEC and 93/195/EEC with regard to imports of registered horses from Ecuador (notified under document number C(1999) 2438)
EU Decision 1999/558
No changes made by 99/558/EC: Commission Decision of 26 July 1999 amending Council Decision 79/542/EEC and Commission Decisions 92/160/EEC and 93/195/EEC with regard to imports of registered horses from Ecuador (notified under document number C(1999) 2438) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.