Article 27 of the Convention of 27 September 1968 on Jurisdiction and the Enforcement of Judgments in Civil and Commercial Matters, as amended by the Convention of 9 October 1978 on the Accession of the Kingdom of Denmark, Ireland and the United Kingdom of Great Britain and Northern Ireland, by the Convention of 25 October 1982 on the Accession of the Hellenic Republic, by the Convention of 26 May 1989 on the Accession of the Kingdom of Spain and the Portuguese Republic and by the Convention of 29 November 1996 on the Accession of the Republic of Austria, the Republic of Finland and the Kingdom of Sweden, and the first paragraph of Article IV of the Protocol annexed to that convention, must be interpreted as meaning that, where a relevant international convention is applicable between the State in which the judgment is given and the State in which recognition is sought, the question whether the document instituting the proceedings was duly served on a defendant in default of appearance must be determined in the light of the provisions of that convention, without prejudice to the use of direct transmission between public officers, where the State in which recognition is sought has not officially objected, in accordance with the second paragraph of Article IV of the Protocol.