Description The S4 Service Functions view defines the behavior of a service in terms of the functions it is expected to perform. S4 is the key behavioral specification for services. Equivalent in nature to L4 - Logical Activities and R4 - Resource Functions, it specifies a set of functions that a service implementation is expected to perform. Implementation The S4 view can be represented using: - S4 Service Functions Taxonomy diagram based on the UML Clas diagram.
![UAF 1.2 Plugin 2021x Refresh2 > S4 Service Functions > S4.png (S4 Service Functions Taxonomy diagram) S4 Service Functions Taxonomy diagram](/download/attachments/85757112/S4.png?version=1&modificationDate=1427779267612&api=v2)
- S4 Service Functions diagram for the Operational Activity flows. This diagram is based on the UML Activity diagram.
![UAF 1.2 Plugin 2021x Refresh2 > S4 Service Functions > S4_flow.png ( S4 Service Functions) S4 Service Functions](/download/attachments/85757112/S4_flow.png?version=1&modificationDate=1456740672531&api=v2)
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