In GSTR-3B, Input not showing as per the seller data found in GSTR-2B reconciliation

ITC Tagging
In this, The tax credit is claimed by the recipient based on the sales invoices uploaded by the seller/supplier. 
A seller uploads the invoice-wise sales details every month/quarter by the 11th of the subsequent month (or 13th of the month subsequent to the quarter). It depends upon the GSTR-1 filing frequency of the taxpayer on the GST portal.
Invoices uploaded by the seller in GSTR-1 can be viewed by the purchaser in his GSTR-2B form.
The purchaser can claim an input tax credit in the GSTR-3B GSTR 3B form based on the tax invoices provided by the seller, as found in his GSTR-2B.
In GSTR-3B  if Input not showing as per the seller data found in GSTR-2B reconciliation follow the below steps:
Step:1 Download GSTR 2B JSON from transaction>GST misc. Utility
Step:2 Open monthly ITC tagging as per GSTR 2B
Step:3 Check the sales invoice uploaded by the supplier.
Step:4 After checking, select those particular invoices one by one and press F4 for claiming those invoices.
Step:5 Now we can check our reports like GSTR-3B as per the ITC we have tagged. Input will reflect as per the ITC tagging.
Step:6 While opening GSTR-3B we need to enable option Pick relevant ITC from monthly ITC tagging.