I am seeing ICMP type 3 error message from my firewall logs. However , I am unable to find the original request sent to that external IP [closed]

No matching connection for ICMP error message: icmp src inside: X.X.X.98 dst outside: X.X.X.11 (type 3, code 2) on inside interface. Original IP payload: udp src X.X.X.11/53 dst X.X.X.98/52906.

Can somebody please help me understand the cause.