F3_SFRE System Functional Refinement Viewpoint
| Domain | Aspect | Maturity |
|---|---|---|
| Functional | Process & Behavior |  under construction |
Example
Purpose
The System Functional Refinement Viewpoint analyses decomposition of System Functions into System Partial Functions in order achieve understanding and agreement about the System functions sufficient to derive system requirements.
Applicability
The System Functional Refinement Viewpoint supports the activities included in the “System Requirements Definition Process” of the INCOSE SYSTEMS ENGINEERING HANDBOOK 2023 [§2.3.5.3]. The System Functional Refinement Viewpoint contributes to the System Function definition.
Presentation
Activity Diagram featuring System Partial Functions, functional exchange between partial functions. There are explicitely no Swimlanes and no allocations to structure.
Stakeholder
Concern
- How are the system functions decomposed into smaller, and more manageable sub-functions?
- What are the interactions and dependencies between the different identified sub-functions?
- What is the breakdown of functions into sub-functions?
Profile Model Reference
The following Stereotypes / Model Elements are used in the Viewpoint:
- SAF_SystemFunction
- SAF_FunctionAction contained in SAF_SystemFunction
- ControlFlow
- Parameter
- ObjectFlow