Is your feature request related to a problem? Please describe.
Neighboring switch areas need to know which message is coming from which area. They need to react only if the message is coming from their neighboring area.
Describe the solution you'd like
Published distributed messages would include a header containing the area id.
Describe alternatives you've considered
None
Additional context
This feature is needed for Distributed Energy Coordinator app but is generic enough to be added to distributed API.