GSTN is not transmitting Shipping Bill data to ICEGATE becoz dealer filed GSTR3B monthly and GSTR1 quarterly. GSTN matches GSTR1 6A of Q3 (Oct Nov Dec) with GSTR3B 3.1.b of Dec only.
So it gives error of deficient IGST paid in 3B.
This is Software Problem in GSTN. Anyone facing similar problem ?
CAclubindia
