Referrals State Model

Status	Description	Terminal State (Y\|N)
Active	Signed and active for usage referral	N
In Use	Referral has been already used and could not be used anymore, but it is still being processed	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	N
In Use	Active	RollBackServiceRequest	Y	Y
In Use	Completed	MarkServiceRequestCompleted (through CloseEpisode)	Y	N
Active	Entered In Error	MarkServiceRequestAsEnteredInError	Y	Y
Active	Cancelled	MarkServiceRequestAsCancelled	Y	Y
In Use	Cancelled	MarkServiceRequestAsCancelled	Y	Y
Completed	Cancelled	MarkServiceRequestAsCancelled	Y	N

Question	Answer
There are cases, when sending notification about transition of referral to status B is not very necessary (because it has happen from status A) and due to cost of notification may not be implemented, and at the same time there are cases, when sending notification about transition to status B is obligatory (because it has happen from status C). How we can handle it?