410 ILCS 705/60-40: Invoices.

Every sales invoice for cannabis issued by a cultivator to a cannabis business establishment shall contain the cultivator's certificate of registration number assigned under this Article, date, invoice number, purchaser's name and address, selling price, amount of cannabis, concentrate, or cannabis-infused product, and any other reasonable information as the Department may provide by rule is necessary for the administration of this Article. Cultivators shall retain the invoices for inspection by the Department.