The required consumption amount is not reached. Vouchers have regulations on the minimum amount of consumption. For example, if you spend 30 yuan or more, you can use 10 yuan, and if you spend 50 yuan or more, you can use 20 yuan, etc. If you do not reach the specified consumption amount, you cannot use it. Use the information on the purchased vouchers to go to the corresponding store address to make purchases. When checking out or ordering, the service staff can register the voucher code.