DetailedStatus compliments PrimaryStatus with additional status detail. It consists of one of the following values: Not Available, ...

DetailedStatus compliments PrimaryStatus with additional status detail. It consists of one of the following values: Not Available, No Additional Information, Stressed, Predictive Failure, Error, Non-Recoverable Error, SupportingEntityInError. Detailed status is used to expand upon the PrimaryStatus of the element. 
A Null return indicates the implementation (provider) does not implement this property. 
"Not Available" indicates that the implementation (provider) is capable of returning a value for this property, but not ever for this particular piece of hardware/software or the property is intentionally not used because it adds no meaningful information (as in the case of a property that is intended to add additional info to another property). 
"No Additional Information" indicates that the element is functioning normally as indicated by PrimaryStatus = "OK". 
"Stressed" indicates that the element is functioning, but needs attention. Examples of "Stressed" states are overload, overheated, and so on. 
"Predictive Failure" indicates that an element is functioning normally but a failure is predicted in the near future. 
"Non-Recoverable Error " indicates that this element is in an error condition that requires human intervention. 
"Supporting Entity in Error" indicates that this element might be "OK" but that another element, on which it is dependent, is in error. An example is a network service or endpoint that cannot function due to lower-layer networking problems.