Changes made by 93/23/EEC: Commission Decision of 11 December 1992 setting out the application arrangements of Council Decision 91/341/EEC providing for the adoption of a programme of community action for the vocational training of customs officials (Matthaeus Programme)
EU Decision 1993/23
No changes made by 93/23/EEC: Commission Decision of 11 December 1992 setting out the application arrangements of Council Decision 91/341/EEC providing for the adoption of a programme of community action for the vocational training of customs officials (Matthaeus Programme) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.