This is the fsmRmtInvErrDescr property on a stats collection policy object, a human-readable description accompanying the remote-invocation error code recorded for this policy's FSM workflow. An admin reads this text directly, rather than looking up the paired numeric error code, to understand in plain language why applying this collection policy failed. For example, this field might describe a lost connection to a peer fabric interconnect, immediately telling the admin the failure was network-related rather than a configuration mistake.