The errors in the fields of the futures trading declaration form are special symbols or punctuation marks. According to relevant public information, the futures trading declaration system can only recognize Chinese characters. If there are special symbols or English punctuation and spaces in the field, it can't be recognized and the field will have errors. A futures trading order is a buy (sell) order submitted at a certain price. The earliest futures trading is that traders hang a list on a board with price, quantity and buying and selling direction. When someone sees that your bid is suitable, they will take it down and find you to make a deal.