SNMP Discovery not fetching Serial Number for Zebra Printers

[Aman Trivedi1]

Hi All,

We are currently facing an issue with SNMP Discovery for Zebra printers, where ServiceNow is not able to  fetch serial Number for Zebra Printer.

🔷 Observed Behavior

Discovery is successfully reaching the device via SNMP and classifying it as a printer.
However, serial number is not being fetched in the discovery payload.
Because of this:

Identification Rule for Serial Number + Serial Type is getting skipped.
Identification falls back to MAC Address (cmdb_ci_network_adapter).

As a result:

Discovery always updates the same CI,

Current Identification rule for Printer:

Priority 100 → Serial Number + Serial Type (Lookup)
Priority 150 → MAC Address (Network Adapter) 
Priority 180 → IP Address Priority 200 → Serial Number
Priority 250 → Name

I have also found some community articles for this Zebra Printer issue, to resolve this they go with Custom Solution.

https://www.servicenow.com/community/itom-articles/how-to-successfully-set-up-snmp-discovery-for-zeb...
https://www.servicenow.com/community/itom-forum/discovery-is-not-able-to-pull-the-serial-number-for-...

Is there any OOTB solution for this issue?

@Selva Arun , @Ankur Bawiskar