26 May 2026
After downloading the latest utility from the GST portal for Annexure B and filling in all the details correctly, it shows a data validation error while uploading the JSON file. Kindly advise me how to solve this error
27 May 2026
Data validation errors during GST RFD-01 Annexure B JSON uploads are typically caused by incorrect date formats (must be DD-MM-YYYY), special characters or hidden spaces in copy-pasted data, or disabled Excel macros. To fix it, ensure macros are enabled, paste data as "Values" only to strip hidden formatting, validate the data inside Excel first, and upload the newly generated JSON via an incognito browser window.