Information about a particular SNMP SET error. The first two
index instances identify the SNMP manager who sent the SNMP SET
request that failed. The third index specifies the SNMP request-id
(sequence number) of the SNMP SET request that failed.
Entries are created by the agent.
Entries are deleted by the agent.
There is no StorageType object, entries have a presumed
StorageType of volatile.