A statement, a signature and a stamp
A certified translation carries a signed statement from the translator or bureau saying the translation is complete and accurate. It has the translator name or number, the date, the bureau stamp and contact details so the receiving office can check it.
Names must match the passport
Most rejections we see come from names. If the birth certificate says Chukwuemeka and the passport says Emeka, the office may ask questions. Tell the translator the passport spelling. A good bureau follows it and notes the difference.
Every stamp and seal is translated
A certified translation covers everything on the page, including stamps, seals, handwritten notes and signatures, described in brackets. Leaving out a stamp can make an office think the translation is incomplete.
Keep the original with you
Some offices want to see the original alongside the translation. Others want both stapled together. Ask the office, and ask the bureau for printed copies if needed.