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If user has created sequence diagram, the only way to create new diagram from it's element's is CDFS. But user can't create second sequence diagram in the same interaction. It was allowed in Coco. steps: - create uml project - create sequence diagram. interaction with sequence diagram will be created. - invoke 'Create Diagram From Selected Elements' on Interaction node. It is prohibited to create second sequence diagram in the same interaction
Error message is displayed on attempt to create second SQD. Creation of another interaction diagram type (collaboration) is also prohibited, but without any message - lack of message is filed as separate issue 96307
his one may have been allowed in Coco, but it should not have been. I think that in buzz, or bow this was not allowed. It does not make sense to allow two sequence diagrams under a single interaction. It does make sense to allow a collaboration and a sequence diagram under the same interaction, because they are different views of the same data. UML was designed so the interaction contains the information in a sequence diagram (or collaboration). It was not designed for one interfaction to support two different sequence diagrams. It is actually kind of fishy that we allow collaboration and sequence diagrams in a single interfaction. This should be allowed because, it is convient for the user because some like the collaboration diagram and some like the sequence diagram. So, I can see that in the same company people could go back and forth between the diagrams.