SysML Sequence diagrams are dedicated to specifying the flow of control between actors and blocks, or between parts of a system. They represent the sequence of sending and receiving messages between the considered entities through the lifelines exposed.
Palette
In the following list only those elements added to sequence diagrams by theSysML specification are detailed.
Item Flow: Creates an Item Flow.
Problem: Creates a Problem note.
Rationale: Creates a Rationale note.
Example
The following example is extracted from the SysML specification and implemented in the SysML Architect module.
SysML Sequence modeling use case