Indicates that there is an exception in the invoice. The emergence of tax early warning is also called tax risk early warning or tax burden early warning. It is a collection and management measure taken by tax authorities to strengthen the management of general taxpayers of value-added tax, prevent the occurrence of zero-negative declaration and control taxpayers with low tax burden. Mainly for the specific products and varieties produced and operated by taxpayers, through the investigation of all taxpayers in the jurisdiction, an average tax rate is obtained. A yellow warning appears, indicating that the invoice is abnormal. The reason for the anomaly can be your billing edge, or it may be an anomaly in system monitoring.