This read-only object, typed as the CwspSpvcState textual convention, carries the specific reason an SPVC (Soft Permanent Virtual Circuit) manager operation failed, and its description explicitly says it is a supporting varbind for trap definitions only -- NMS applications should not GET or GET-NEXT it. It lets an admin who receives an SPVC failure trap see exactly what went wrong with the SPVC manager rather than just that an SPVC failed. For example, an admin correlating a burst of SPVC-down traps would read the accompanying ciscoWANSpvcFailReason value in each trap to see whether the failures share a common root cause.