You can download the zipped error report of the GSTR-9C filing can be downloaded by navigating as follows:Go to GSTR-9C tile after logging into GST portalGo to Upload History tableClick on ‘Generate error report’ linkClick on ‘Download error report’ under ‘Error Report’ column.The JSON format of the error report is downloaded on your system.You can import it into your offline tool to make further corrections.