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1. REGISTER for distribution – SO, DCAE, A&AI, SDN-C, APP-C, VF-C register for distribution of the SDC Artifact distribution via the registration service of the SDCE-6 interface. 

2. CSAR DISTRIBUTION to SO – SDC Distributes to service CSAR SO using the SDCE-6 interface. The SO listener retrieves the SDC CSAR package. SDC distributes the Service Distribution CSAR package which includes all of the artifacts, templates and resources related to the service created in design time. SDC publishes a topic onto DMaaP. Any RT component that has subscribed to that topic can get that package.

3. STORE CSAR – SO stores the distributed package.

4. SO RESPONDS - SO responds to the SDC Distribution exchange using SDCE-6.
5. CSAR Distribution to DCAE - SDC Distributes service CSAR to DCAE using the SDCE-6 interface,  the DCAE Service Change Handler retrieves the SDC CSAR package, SDC distributes the Service Distribution CSAR package which includes all of the artifacts, including templates and resources related to the service created at design time.
6. STORE CSAR – DCAE stores the distributed package.
7. DCAE RESPONDS - DCAE responds to the SDC Distribution exchange using SDCE-6.
8. CSAR DISTRIBUTION to A&AI - SDC Distributes service CSAR to A&AI using the SDCE-6 interface,  the A&AI  listner retrieves the SDC CSAR package, SDC distributes the Service Distribution CSAR package which includes all of the artifacts, including templates and resources related to the service created at design time.
9. STORE CSAR – A&AI stores the distributed package.
10. A&AI RESPONDS - A&AI responds to the SDC Distribution exchange using SDCE-6.
11. CSAR DISTRIBUTION  to SDN-C - SDC Distributes service CSAR to SDN-C using the SDCE-6 interface,  the SDN-C UEB  listner retrieves the SDC CSAR package, SDC distributes the Service Distribution CSAR package which includes all of the artifacts, including templates and resources related to the service created at design time.
12. STORE CSAR – SDN-C stores the distributed package.
13. SDN-C RESPONDS - SDN-C responds to the SDC Distribution exchange using SDCE-6.
14. CSAR DISTRIBUTION  to APP-C - SDC Distributes service CSAR to APP-C using the SDCE-6 interface,  the APP-C listner retrieves the SDC CSAR package, SDC distributes the Service Distribution CSAR package which includes all of the artifacts, including templates and resources related to the service created at design time.
15. STORE CSAR – APP-C stores the distributed package.
16. APP-C RESPONDS - APP-C responds to the SDC Distribution exchange using SDCE-6.
17. CSAR DISTRIBUTION  to CLAMP- SDC Distributes service CSAR to CLAMP using the SDCE-6 interface,  the CLAMP listner retrieves the SDC CSAR package, SDC distributes the Service Distribution CSAR package which includes all of the artifacts, including templates and resources related to the service created at design time.
18. STORE CSAR – CLAMP stores the distributed package.
19. CLAMP RESPONDS - CLAMP responds to the SDC Distribution exchange using SDCE-6.
20. CSAR DISTRIBUTION  to POLICY- SDC Distributes service CSAR to POLICY using the SDCE-6 interface,  the POLICY listner retrieves the SDC CSAR package, SDC distributes the Service Distribution CSAR package which includes all of the artifacts, including templates and resources related to the service created at design time.
21. STORE CSAR – POLICY stores the distributed package.
22. POLICY RESPONDS - POLICY responds to the SDC Distribution exchange using SDCE-6.
23. CSAR DISTRIBUTION  to Multi-Cloud- SDC Distributes service CSAR to Multi-Cloud using the SDCE-6 interface,  the Multi-Cloud listner retrieves the SDC CSAR package, SDC distributes the Service Distribution CSAR package which includes all of the artifacts, including templates and resources related to the service created at design time.
24. STORE CSAR – Multi-Cloud stores the distributed package.
25. Multi-Cloud RESPONDS - Multi-Cloud responds to the SDC Distribution exchange using SDCE-6.
26. Unregister from CSAR distribution. At any time, any module can unregister from the reception of the CSAR using the Register for distribution service of SDCE-6 interface.

3b (temp) Alternative flow representation

@startuml
participant SDC
participant "SDC Artifact Consumer" as Consumer

autonumber 

== Register to Service CSAR Distribution == 

Consumer-->Consumer: Register for Distribution

note right: performed by all receptiants of the CSAR
note right: This includes SO, SDC, DCAE, AAI, SDNC, APPC, CLAMP, POLICY, MultiCloud

== Service CSAR Distribution == 



group Distribute to SDC artifact consumer
	hnote over Consumer: Consumer Listner
	SDC -> Consumer: SDC Distribution Notification
	note left: Using DMaaP
	note right: Can be any consumer
	Consumer -> SDC: Request Artifact(Artifact-Type)
	SDC -> Consumer: Repond (with Artifact)
	Consumer -> Consumer: Store Artifact
	Consumer -> SDC: Distrubution Status Update
end

== Un Register to Service CSAR Distribution (optional, at any time) == 
Consumer --> Consumer : UnRegister for Distribution
note right: performed by all receptiants of the CSAR that want to unregister


@enduml

1. REGISTER for distribution – SO, DCAE, A&AI, SDN-C, APP-C, VF-C register for distribution of the SDC Artifact distribution via the registration service of the SDCE-6 interface. 
   Note: This is only done once, not once per distribution request.

2. CSAR Ready NOTIFICATION to Consumer– SDC informs the consumer that there is a new artifact to be distributed using the Distrbution notification interface of SDCE-6.

3. CSAR RETRIEVAL: The cosumer retrieves the artifact using the Artifact retrieval interface of SDCE-6.

4. STORE CSAR – The Consumer stores the distributed package.
5. Consumer Status Update- The consumer informs SDC that the artifact has been consumed using the distribution status interface of SDCE-6.
6. Unregister from CSAR distribution. At any time, any module can unregister from the reception of the CSAR using the Register for distribution service of SDCE-6 interface.
   Note: This is only done if the Consumer does not want to be informed of any more artifacts that are ready to distribute

4. Post Condition

The post-conditions are:

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