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Negative flows in a sequence flow diagram

 
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Hi

I am just wondering what people's opinions are on having multiple sequence flow diagrams for the same use case in the assignment. In other words, if a particular use case has a positive and a negative flow, i.e. validation step fails within the use case - should you create multiple sequence flow diagrams.

I don't want to build conditional flows in to the same sequence diagram has I think it looks very messy. Or is it OK just to focus on the positive flow ( in relation to the assignment)

Thanks
Joe
 
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In my case I only showed the positive outcome and communicated this to the examiner in the assumptions area.
 
Joe O'Toole
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Thanks Marcelo!
 
Don't get me started about those stupid light bulbs.
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