Based on relevant information query, it shows: Yes. Invoices refer to business vouchers issued and collected by all units and individuals when purchasing and selling goods, providing or receiving services, and engaging in other business activities. They are the original basis for accounting and are also an important basis for law enforcement inspections by auditing agencies and tax authorities. Receipts are proof of receipt and payment. Invoices can only prove that the business has occurred, but cannot prove whether the money has been received or paid. So you can open the unit to raise your head.