Wrong Credit Note showing in my GST2B ,do I pay ITC for same in my 3B ?

A user is experiencing an issue where an incorrect credit note, uploaded by an unknown party, is appearing in their GSTR-2B and auto-populating into their GSTR-3B. They are seeking advice on whether they need to pay Input Tax Credit (ITC) for this erroneous entry and how to rectify the situation, especially since the uploader is unresponsive. The advice given is to skip the credit note in GSTR-3B but be prepared to prove it's not theirs if a GSTN notice is received.