1. First of all, the expenses reimbursed and the invoices (copies of invoices) obtained should be consistent with the actual expenses incurred. For example, invoices obtained from the catering industry cannot reimburse the cost of purchasing office supplies, and retail invoices cannot reimburse the service fees paid.

2. The invoice date cannot be too different from the reimbursement time, and the amount in figures and words must be the same. The invoice shall be stamped with the special invoice seal.

3. The reimbursement system of different companies will be different. Some companies have good financial internal control. Usually, for example, if the amount is relatively large and can be included in the company's fixed assets, it is necessary to ask the buyer for a special VAT invoice from the buyer before reimbursement.

The general process of reimbursement is to verify the authenticity of expenses, whether invoices and reimbursement forms are normal, whether the reimbursement amount exceeds the provided invoice amount, and whether the amount to be reimbursed is within the controlled reimbursement range. The relevant person in charge signs, reimburses the verified expenses and returns the expenses that do not meet the requirements.