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All Functional working group-members are invited to add practical examples of this use case in the comment section.
Sequence diagram
Note that an that an Identity Broker can can be introduced to broker the relation between the Service Provider and both the Authorisation Registry and the Identity Provider; this the Identity Provider(s) and/or the Service Provider and the Authorisation Registry(s). This is optional and useful in situations with several Identity Providers and/or Authorisation Registries and (especially) several Identity Providers. This . This use case would look as follows with a Service Broker:
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