Foreign-related revenue and expenditure transaction code, which is used to declare foreign-related revenue and expenditure transactions and record all behavior transactions related to cross-border funds. Whether it is a capital project or a recurring project, it will correspond to the transaction code of foreign-related income and expenditure and be filled in at the time of declaration. Referring to the document "Classification and Standard of Foreign-related Income and Expenditure Transaction Codes (Version 20 14)" issued by the State Administration of Foreign Exchange, this paper classifies foreign-related income and expenditure transaction codes according to income direction and expenditure direction.

Transaction codes consist of 6 digits, but they are not randomly assigned to a business item, but have a hierarchical structure. For example, the 1 bit of the transaction code indicates the top-level business classification item, 1= trade in goods, and 2= trade in services. Under normal circumstances, the 1 bit of the transaction code is 1-4, indicating the business under recurring projects; the 1 bit of the transaction code is 5-8, indicating the business under capital projects, and 9 indicates new or special business. 1-3 bits of the transaction code indicate the intermediate business classification. 6-digit transaction code, indicating specific business items.

2. Transaction code details

Next, we extend the transaction code. From the composition of the transaction code, we can know the complexity of cross-border trade in China. Every business involves data including enterprises, commodities, time, funds, countries, currencies, import and export directions, etc. It is really complicated.