Can a gym certificated just from Ministry of Tourism and Sports make the letter to request the dtv visa?
I think they dont have the certifications for ministry of education
TLDR : Answer Summary
A gym certified by the Ministry of Tourism and Sports can potentially issue a letter for a DTV visa, provided it is approved for this specific visa. While most embassies accept this certification, some may insist on additional credentials from the Ministry of Education or the Board of Boxing Sport. It is not uncommon for gyms to lack this full set of certifications, but the sports authority certificate is generally the most critical for the visa process.
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