I am visiting Belgium to attend a study related conference. My professor will act as guarantor to cover all expenses. What should be mentioned in the letter of guarantee by him such that the visa does not get rejected. Should any other documents related to the professor also be enclosed while writing the letter?
As a general guide, a personal sponsor will need to state why they are prepared to sponsor you and what their relationship is to you, and to provide documentary evidence to substantiate their ability to support you eg salary, savings. Having a sponsor does not guarantee your visa will be approved.