The Hague Apostille should be placed on the original document issued by a competent authority, not on the translation. Once the original document has been apostilled, you can order a sworn translation of the document and the apostille if necessary. This ensures that the document is valid in the destination country.

If the apostille is written in one of the official languages of the destination country or in a language that that country accepts, you will not need to translate it. However, if it is not understandable in the destination country, you will need a sworn translation of both the apostille and the original document. Some countries require translation even if some of the text is in their official language, so it is best to check the specific requirements of the destination country.

Sworn translations are valid internationally, but the scope will depend on the specific requirements of the destination country. If the document is intended for a Hague Convention member country, they are likely to accept the sworn translation without any issues. For countries that are not part of the convention, an additional consular legalisation process may be required. Please check the requirements of the country in question before proceeding.