In RMsis 1.7.8 and previous versions, you can not customise the ID of requirements in RMsis.
- You can possibly create a custom attribute for this purpose [http://docs.optimizory.com/display/rmsis/Requirement+Configuration].
- Please note that the custom attributes can also be created at the project level [http://docs.optimizory.com/display/rmsis/Project+Configuration+and+Administration]
However, this issue has been resolved in RMsis 1.8.0.
RMsis 1.8.0 includes the feature for defining and using Custom-Id for Requirements.
A detailed explanation for this functionality is available here : http://docs.optimizory.com/x/Hoid

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