operationTrigger is a read-write character string that, per the module's overall purpose ("A mechanism to trigger the MCP scripts"), an admin writes to under the mcp operation branch to invoke a specific MCP operation script on the agent. Because the object itself is documented only as a generic "Character string value", an admin needs to know the specific trigger keyword or argument the target script expects; the paired operationStatus object then reports back the outcome of that triggered action. As an illustrative example, an admin might SNMP-SET operationTrigger to a value such as "start" to kick off the configured MCP operation script, then poll operationStatus to see whether it completed.