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)