There are two lines of transaction code for foreign-related income declaration, because foreign-related income involves many different transaction types or subcategories. In this case, in order to record and classify foreign-related income more accurately, the declaration form will provide two or more lines to fill in the relevant information. Each line corresponds to different transaction types or subcategories, one line is used to report commodity sales income and the other line is used to report labor income, so that different types of foreign-related income can be distinguished and counted more clearly. Foreign-related income declaration transaction code is a coding system used to identify and classify foreign-related income.