I'm monitoring an UPS system via SNMPv3. Now I noticed that the items regularly become not supported due to "OID mismatched". But some time later the data can be polled without any issues.

I couldn't find any information about what this error message exactly means. So I assume that the requested OID is different from the one which is returned by the host. Therefore I checked this using tcpdump which showed that the OIDs are the same.

Please provide more information on this error and how I could check if it's an issue with Zabbix or with the monitored host.