SNMP Trap listener Authentication failure. SNMP USM error code:1404Issue SNMP Trap Collector configured with SNMPv3 credential error "SNMPTrapListener: (trapName): Authentication failure. Message sent from: ip_address. SNMP USM error code:1404."ReleaseAll currently supported releases.CauseThe trap collector can be configured to use version SNMP v1 and v2 or SNMPv3. If configured for SNMPv3, the listener will load the credentials into the User-based Security Model (USM). Traps sent to the MID server should therefore authenticate with one of the credentials configured in the SNMP Trap collector. Error code 1404 is for "Unknown SecurityName", which implies the user doesn't exist (as opposed to other error codes that, for example, could indicate mismatched security protocols). Therefore the error "SNMP USM error code:1404" is seen when the credential used by the device sending the trap does not match any of the credentials configured in the trap collector. Overall, there are two reason for this error: Device sending trap does not have proper credentials configured.Trap collector is not configured with a matching credential. Note: The trap collector loads credentials which are found in field credential_ids (ecc_agent_ext_context_trap.credential_ids) of the trap collector record. The value of credential_ids field are the sys_id values of the SNMPv3 credentials to be loaded by the collector. This field is populated when the credentials are configured in the trap collector record. It is possible the sys_id values are not added even though the credential is seen in the trap collector, which could be for different reasons.ResolutionFirst, use a network traffic capturing tool to confirm the correct credential is being sent by the device sending the trap. As an example, Wireshark could be installed on the MID server to accomplish this. Credential not sent with trap: Configure credential on source device sending the trap. Credential sent with trap, confirmed via traffic capture review: Restart the trap collector. No credentials are loaded by the collector if error "No snmpv3 credentials found for snmp connector" is seen. ECCQueueMonitor WARNING *** WARNING *** SNMPTrapListener - SNMPTrapListener: (trapCollectorName): No snmpv3 credentials found for snmp connector: trapCollectorName Re-add the credentials to the trap collector if above error is seen even when the proper credentials are configured on the trap collector.Confirm column credential_ids is populated correctly on the trap collector.Restart the trap collector.