Most Important Advisory on GSTR-1/IFF: Introduction of New Tables 14 and 15 and Introduction of New ECO Documents in GSTR-2B GST / TaxConcept / January 15, 2024 / gst news, GST PORTAL, GST PORTAL ADVISORY, gst table 14, gst table 15, GSTR-1, GSTR-2B, Latest GST News