This read-only enumerated value reports true(2) if the configured external OID (cpqExExternalStatusVariable) was successfully retrieved during the last sampling period, or false(1) if it was unavailable or could not be queried. An administrator checks this before trusting cpqExExternalStatusValue, since a stale or unreachable target device would show false(1) here. A false(1) reading would tell an admin the third-party device being externally monitored may be down or unreachable, rather than that its status value is simply normal.