26 May 2026
While uploading the Annexure B after validating the excel sheet and generated the json file for refund of exports without payment IGST. the portal shows the error invalid data format and not validated the sheet. The Annex B downloaded in the GST portal. Please let me know how to solve this error. Please clarify
26 May 2026
1. Download the latest version of the Excel offline utility directly from the GST portal to eliminate schema mismatches. 2. Double-check that all date formats are strictly DD-MM-YYYY and Port Codes are exactly 6 characters with no special characters or trailing spaces. 3. Clean your browser cache or attempt the upload in an Incognito window.