You can compile, deploy, test, and debug the message flow
that includes your user-defined node in the same way that you test
any regular subflow. However, you must set a breakpoint so that the
debugger stops at that point, see
Working with breakpoints in the flow debugger.
You
can debug the message flow only if the following constraints are met:
- The user-defined node project must be in the workspace.
- The user-defined node project must be in the simulation mode.
- The subflow cannot be debugged after it has been exported as a
plug-in, unless the source code is in your workspace.