The documentation you provide must meet the following requirements.
You must submit documentation to establish your identity and your connection to a foreign country ("foreign status"). Applicants claimed as dependents must also prove U.S. residency unless the applicant is from Canada or Mexico or the applicant is a dependent of U.S. military personnel stationed overseas.
You must submit original documents, or certified copies of these documents from the issuing agency, that support the information provided on Form W-7. A certified document is one that the original issuing agency provides and certifies as an exact copy of the original document and contains an official stamped seal from the agency. You may be able to request a certified copy of documents at an embassy or consulate. However, services may vary between countries, so it’s recommended that you contact the appropriate consulate or embassy for specific information.