GSTR3B vs GSTR1

md sajruddin khan (full details of gst and hsn code)   (233 Points)

17 January 2021  
If a person has Zero rated sale, and he in filed gstr1 but not filed the amount in GSTR3B, and in Annual return he has shown the amount,
But if he has not paid tax, he always receiving mail for difference (GSTR1 6A column vs GSTR3B 3.1B) while he filing any GSTR.
So my question is how to correct the difference???
Thanks
Urgent help Please 🙏