Changes made by 1720/1999/EC: Decision of the European Parliament and of the Council of 12 July 1999 adopting a series of actions and measures in order to ensure interoperability of and access to trans-European networks for the electronic interchange of data between administrations (IDA)
EU Decision 1999/1720
No changes made by 1720/1999/EC: Decision of the European Parliament and of the Council of 12 July 1999 adopting a series of actions and measures in order to ensure interoperability of and access to trans-European networks for the electronic interchange of data between administrations (IDA) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.