diff --git a/message_definitions/v1.0/development.xml b/message_definitions/v1.0/development.xml
index 95665d3cad..7a548afbe0 100644
--- a/message_definitions/v1.0/development.xml
+++ b/message_definitions/v1.0/development.xml
@@ -350,6 +350,17 @@
+
+
+ Set system and component id.
+ This allows moving of a system and all its components to a new system id, or moving a particular component to a new system/component id.
+ Recipients must reject command addressed to broadcast system ID.
+
+ New system ID for target component(s). 0: ignore and reject command (broadcast system ID not allowed).
+ New component ID for target component(s). 0: ignore (component IDs don't change).
+ Reboot components after ID change. Any non-zero value triggers the reboot.
+
+
Used to manually set/unset emergency status for remote id.
This is for compliance with MOC ASTM docs, specifically F358 section 7.7: "Emergency Status Indicator".