Tax liability 3B Vs GSTR 1

Dear Sir

As per March month GSTR 3B tax liability is CGST 1150/- SGST 1150/- in same month Supplier post Credit not which reflect in 2A. in March month we don't have input. so I included reversal ITC tax value Rs.500 in current month liability after including tax value liability CGST 1400/- SGST 1400/- and deposit the same. today when I check GST portal 3B Vs GSTR 1 its showing difference.
tax liability declare in GSTR 1
CGST 1150/- SGST 1150/-
tax liability declear in GSTR 3B
CGST 1400/- SGST 1400/-