Modeling Guidelines for SysML Activity Diagram

The activity diagram is used to describe the flow of control and flow of inputs and outputs among actions. OMG Systems Modeling Language (OMG SysML™) Version 1.6

The following guidelines apply to all Activity Diagram types

Actions
Activity Parameter Node
The Diagram Frame must be displayed to show the node. Unfortunately, the Activity Parameter Node won't be owned by the Diagram Frame
Diagram Frame and Heading
The following guidelines apply to the diagram frame:
Element from a different Activity cannot appear in the diagram of another Activity
The source tool allows for this type of display where the target tool does not. A reference is required.