Remember the official document number of a company?

Generally, it should not be written together. According to the rules of official documents, general companies also keep separate records. For example, the opinions, decisions and resolutions of a company are generally numbered with "f a". Take a company as an example, that is, "A company issued the number [20 13]. Another example is the company's notices and announcements. Generally, it is a "word" number. For example, the notice of a company is the general word [20 13] number of a company. Meeting minutes, if red-headed documents are sent, should be numbered with the word "XXX". However, maybe your company has its own regulations, you can refer to the previous posting register to understand clearly.