Authorization letter?

Question

Authorization letter?

Answer 1

What is your question? What about an "authorization letter"? There is no verb in that sentence. Please re-phrase your question, and explain what you want to know, and tell us what kind of authorization you are referring to. What do you want to do?

Answer 2

Authorization letter is important for someone to get a document in behalf of another person.  For legal documents, a special power of attorney is needed.

Answer 3

You probably mean invitation letter from another country inviting you in... get the person from the country you want to enter to write up an official invitation letter...