Illegal. In violation of the Regulations of People's Republic of China (PRC) on Invoice Management, it is illegal to use other invoices instead of tickets. At the time of reimbursement, the other party may be required to provide valid invoices such as invoices and receipts to prove the authenticity and legality of the transaction, and provide detailed financial statement information, including revenue and expenditure amount, revenue source, expenditure direction, budget amount, etc. , so as to review, understand and record the reimbursement. In addition, due to the high requirements for original invoices in tax management, it is suggested to use the correct invoices as much as possible in reimbursement, and not to use other invoices instead of tickets, so as not to affect the company's tax. The requirement of invoice reimbursement involves not only enterprise financial management, but also legal knowledge. The issuance of reimbursement invoices shall comply with the provisions of the Notice of State Taxation Administration of The People's Republic of China, Ministry of Finance of People's Republic of China (PRC) on Relevant Matters Concerning Invoice Management.