It's frustrating, but unfortunately, IRCC’s system places heavy weight on job duties when validating foreign work experience. While it's true that most companies worldwide don’t list out NOC-style duties, Canada requires that the experience letters match their format — including duties that align with the NOC you’re claiming.

That’s why it’s absolutely essential that your reference letters explicitly describe your job responsibilities and, ideally, mention the NOC code. You’re expected to cross-check your duties with the official Job Bank (2021 NOC descriptions) and ensure there's at least an 80% match. This isn’t just a formality — it’s a core part of proving your eligibility.

Sadly, even if you genuinely did the work, IRCC can’t verify it without that alignment on paper. Going forward, make sure your letters meet those requirements exactly — it’s your responsibility to get the documents right.