The second version is clearer and thus preferable. Of course, there are exceptions to every rule. What if you are the head of the Global Finance Team? You may want to get your message across without calling excessive attention to the fact that the error was your team’s fault. The passive voice allows you to gloss over an unflattering point—but you should use it sparingly.
Beginning the Letter. Know the format: There are some business standards which need to be followed. One must use a common font to type a business letter. One must use indentation, paragraphs, margins etc. The text must be typed in black color only. Choose the Right Kind of Paper: One must print a letter in a letter sized paper. The standard size of the paper is A4.