The operation steps of invoice coding are as follows: 1. Open the billing software.
2. Open the original commodity code.
3. first increase the category.
4. Add goods and assign codes.
Invoice refers to the business vouchers issued and collected by all units and individuals in buying and selling goods, providing or receiving services and engaging in other business activities. It is the original basis of accounting, and it is also an important basis for law enforcement inspection by audit institutions and tax authorities.