1. Check the contract to see whether the invoice quantity or the receipt quantity is correct. If the warehousing quantity is consistent with the contract and accurate, the invoice must be returned to the sales unit for re-issuance;

2. If the invoice quantity is consistent with the contract, but the warehousing quantity is incorrect, it is necessary to coordinate the sales unit, refund more and make up less to avoid wrong accounts.

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. Receipt is the proof of receipt and payment, and invoice can only prove that the business has happened, but can't prove whether the money has been received or paid.

Invoice refers to the text issued by the seller to the buyer in economic activities, including the name, quality and agreed price of the products or services provided to the buyer. In addition to the advance payment, the invoice must also include the money paid by the buyer to the seller according to the agreed conditions, and must include the date and quantity, which is an important proof of accounting. According to China's accounting system, valid invoices for purchasing products or services are called tax invoices. The charging vouchers of government departments have different names in different periods and different charging items, but most of them are collectively referred to as administrative fee receipts. For internal audit and verification, each invoice must have a unique journal number to prevent duplicate or skip invoices.

Measures for the Administration of Invoices in People's Republic of China (PRC) Article 4 The competent tax authorities in the State Council shall be in charge of the administration of invoices throughout the country. The tax authorities of provinces, autonomous regions and municipalities directly under the Central Government shall, according to their duties, do a good job in invoice management within their respective administrative areas.

Finance, auditing, market supervision and management, public security and other relevant departments shall, within the scope of their respective duties, cooperate with the tax authorities to do a good job in invoice management.

Article 7 Special VAT invoices shall be printed by enterprises determined by the competent tax authorities in the State Council; Other invoices shall be printed by enterprises determined by the tax authorities of provinces, autonomous regions and municipalities directly under the Central Government in accordance with the provisions of the competent tax authorities of the State Council. It is forbidden to print, forge or alter invoices without permission.

Article 8 An enterprise that prints invoices shall meet the following conditions:

(a) to obtain a printing business license and business license;

(two) the equipment and technical level can meet the needs of printing invoices;

(three) a sound financial system and strict quality supervision, safety management and confidentiality system.

The tax authorities determine the enterprises that print invoices through bidding, and issue quasi-confirmed invoices.