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You can assign ASIL (Automotive Safety Integrity Level) to requirements in several ways.
You can directly assign ASIL to a requirement by double-clicking on the top-right corner of the requirement.
You can also assign it from Requirement’s property view.
Please refer to “Decomposition” for details.
When you perform decomposition several times, ASIL assigned at the last decomposition will stay.
When you create a Safety Goal Requirement with ASIL on a Safety Concept Diagram, the ASIL of the safety goal will apply to all the requirements on the diagram.
ASIL of requirement is determined in the following order.
You can see a history of assigned ASIL from [View ASIL History] menu on a requirement’s pop-up menu.
This ASIL history helps to clarify how the current ASIL was set to the requirement.