You can change it. The purchase bill of gold jewelry is missing, so you can go to the jewelry store you bought at that time to make an inquiry. As long as the records are recognized, they can be exchanged for new ones. 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.