This code system http://hl7.org/fhir/endpoint-status defines the following codes:

CodeDisplayDefinition
activeActiveThis endpoint is expected to be active and can be used
suspendedSuspendedThis endpoint is temporarily unavailable
errorErrorThis endpoint has exceeded connectivity thresholds and is considered in an error state and should no longer be attempted to connect to until corrective action is taken
offOffThis endpoint is no longer to be used
entered-in-errorEntered in errorThis instance should not have been part of this patient's medical record.
testTestThis endpoint is not intended for production usage.