Simulink Requirements Type property greyed out

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checker 2020-3-16

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https://ww2.mathworks.cn/matlabcentral/answers/511176-simulink-requirements-type-property-greyed-out

回答： Yongjian Feng 2021-6-25

Greetings:

In Simulink Requirements ™ I add a top level requirement and set the type property to 'Informational'. I then add a child requirement and the type property is set to 'Functional' and greyed out. If I change the parent to 'Functional', I can then change the child to 'Informational'. Going back to the parent and changing it back to 'Informational' and the child type remains set to 'Informational' but is still greyed out. Why?

Thanks.

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Answer 1

Yongjian Feng 2021-6-25

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/511176-simulink-requirements-type-property-greyed-out#answer_733895

Hello checker,

According to the document about Requirement Type (https://www.mathworks.com/help/slrequirements/ug/requirement-types.html), all the child requirements of an Informatinal requirement do not contribute to the Implementation and Verification status. That is why the type selection is greyed out.

Thanks,

Yongjian