I am in india currently and I have applied for dependent visa O and they have asked me for letter of confirmation of relationship despite of having marriage certificate. Can someone advice from where can I get the same and what is the procedure.
TLDR : Answer Summary
The user is currently in India and has applied for a dependent Visa O for Thailand. However, they have been requested to provide a confirmation of relationship letter in addition to their marriage certificate. Commenters have advised that the letter should be from the user's wife, confirming the marriage, and should be written in Thai to explain the reasons for the visa application.