Good to see you, @abiram-vv.
You may need to check the transactions that use the reverse charge. Since this tax form is for bills, there may have been a few invoices that are coded with tax codes incorrectly.
You can check this article as your reference: Applying IGST on invoices. It includes the criteria of taxes to determine transaction rates.
To learn more about what is a GSTR 2 return and its contents, kindly refer to this article: Understanding GSTR 2 form. It contains instructions on where to file the said return in the Where to file GSTR return? section.
Let me know or share additional details if you need further assistance. I'll get back to you as soon as I can. Stay safe as always!
