Elite TransLingo is a reliable translation company providing unique, and affordable translation services in San Antonio, Texas. Get your website and legal documents translated.Professional translation services in San Antonio, TX. ATA Certified Translations for USCIS in San Antonio. An affidavit translation is a formal statement sworn under oath. It can also refer to a sworn translation of an official document like a marriage certificate. Translation Services Agency in San Antonio providing language interpretation and translaiton services in 100 Languages. Call for a free consultation. An affidavit is a written statement made under oath that is typically used in legal proceedings. Learn their purpose, when to use, and how to write. An affidavit for a translation is a document that says the translation is a true and accurate version of the original text.