After replacing a hardware Switch and during discovery the following error message is noticed in the SNMP - Classify - Input payload, though the Test Credentials is successful.
<result error="SNMP probe timed out. Target is either unreachable or there are no valid credentials for it." source="xx.xx.xx.xx">
New hardware Switches which were replaced don't have the agent file configured in order for the discovery to be successful.
The agent configuration file needs to be configured in line to the older hardware device (or) needs to be replaced by the internal Network team for the discovery to be successful.