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The situation is, I'm comlaining about the problem concerning submitting important documents via Internet because it seems like that document was not properly submitted.

However, I don't know if it was my fault because I didn't follow the procedure or because of the bugging system. I want to write a formal to my University about that, but I don't know how to say it in an academic way.

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up vote 3 down vote accepted

"The reason for this is currently unknown"

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