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It is prohoboted to create two sequence diagrams for operation using CDFS. At the same time it is allowed for Collaboration diagrams. Or for Sequence diagrams created using 'Reverse Engineer Operation'. steps: - create java application with default Main class. - Reverse Engineer it into java-model uml project - Expand class element node in Model tree. - select 'Create Diagram From Selected Elements' from 'main' operation context menu. - create Sequence diagram in opened 'New Diagram wizard'. - Invoke 'Create Diagram From Selected Elements' for the same operation again. - select sequence diagram again. The following error message is displayed: "An Operation's interaction can only contain one scoped Sequence Diagram". 'Next' and 'Finish' buttons are disabled.
see relates issues: issue 78274 - There is CDFS context menu item for operations and CDFT toolbar button enabled issue 78784 - Result of CDFS from Operations to SQD depends on nodes selection order
In the past we did allow operations to own multiple collaborations and sequence diagrams. So, either something was not working correctly in the past, or this is new code. Eitehr way I have removed this logic to fix the regression.
verified in build 070222.