Errors made with respect to precedence are very grave indeed, if made by a protocol officer. The established and accepted order of precedence is a point of departure for any involvement of the Protocol, from organizing the order of arrivals and departures, seating arrangements, to introduction of distinguished guests. In many countries, failure to recognize or honour the appropriate rank and order of precedence of a guest is equal to an insult to his position and the country he/she represents. That was the reason why even wars were unleashed in the past.