Referrals State Model

Status	Description	Terminal State (Y\|N)
Active	Signed and active for usage referral	N
Used	Referral has been already used and could not be used anymore without rolling back	N
In Progress	Refehhal has been already used and taken into work	N
Completed	Referral has been processed	Y
Entered In Error	Referral is cancelled because of human mistake in the process of creation	Y
Cancelled	Referral is cancelled because of absence of necessity and other reasons (for example fraud)	Y

State Transitions

From	To	Method	Notification to Event Manager (Y\|N)	Notification to Patient (Y\|N)
Active	In Use	UseServiceRequest	Y	Y
Used	Active	RollBackServiceRequest	Y	Y
Used	In Progress	MarkServiceRequestAsInProgress (through CreateEncounter)	Y	N
In Progress	Completed	MarkServiceRequestAsCompleted (through CloseEpisode)	Y	N
Active	Entered In Error	MarkServiceRequestAsEnteredInError	Y	Y
Active	Cancelled	MarkServiceRequestAsCancelled	Y	Y
Used	Cancelled	MarkServiceRequestAsCancelled	Y	Y
In Progress	Cancelled	MarkServiceRequestAsCancelled	Y	Y
Completed	Cancelled	MarkServiceRequestAsCancelled	Y	N