diff --git a/osi_trafficcommand.proto b/osi_trafficcommand.proto
index 6bd2da8d4..6e717e3e8 100644
--- a/osi_trafficcommand.proto
+++ b/osi_trafficcommand.proto
@@ -65,6 +65,8 @@ message TrafficCommand
 // model that certain actions must or shall be terminated, there are 
 // explicit actions nested inside this message (AbortActionsAction, 
 // EndActionsAction), which hold a reference to the respective actions.
+// Futhermore, there exists a \c TrafficCommandUpdate message for the 
+// traffic participant to report back on potentially dismissed actions. 
 //
 message TrafficAction
 {
diff --git a/osi_trafficcommandupdate.proto b/osi_trafficcommandupdate.proto
new file mode 100644
index 000000000..d55d38ff3
--- /dev/null
+++ b/osi_trafficcommandupdate.proto
@@ -0,0 +1,83 @@
+syntax = "proto2";
+
+option optimize_for = SPEED;
+
+import "osi_version.proto";
+import "osi_common.proto";
+
+package osi3;
+
+//
+// \brief This message enables the traffic participant model to send updates 
+// to the scenario engine about the execution of its received \c TrafficCommand input. 
+// While traffic actions are usually executed successfully by the traffic participant,
+// there may be actions which the traffic participant is not able to execute
+// either for capability or situation-specific reasons. 
+// 
+// This message allows a traffic participant to send feedback if an action 
+// cannot happen as requested by the \c TrafficCommand. Currently, it is out of
+// scope to standardize the exact reason for non-executability or failed execution 
+// because the reason can have multiple explanations. The responsibility for deciding 
+// about successful or unsuccessful scenario execution lies fully on the side of the 
+// scenario engine.  
+//
+// \note This interface is currently just a placeholder and could be
+// changed in experimental ways to support semantics of upcoming OpenSCENARIO 
+// versions. 
+//
+message TrafficCommandUpdate
+{
+    // The interface version used by the sender (traffic participant model).
+    //
+    optional InterfaceVersion version = 1;
+
+    // The data timestamp of the simulation environment. Zero time is arbitrary
+    // but must be identical for all messages. Zero time does not need to
+    // coincide with the UNIX epoch. It is recommended to use zero timestamp as 
+    // the starting time point of the simulation.
+    //
+    optional Timestamp timestamp = 2;
+
+    // The ID of this traffic participant which must coincide with a prior sent ID, cf.
+    // \c TrafficCommand::traffic_participant_id.
+    //
+    optional Identifier traffic_participant_id = 3;
+
+    // Actions which a traffic participant dismisses and which are not yet ended or 
+    // aborted by the scenario engine (via a \c TrafficCommand::action.end_actions_action or a 
+    // \c TrafficCommand::action.abort_actions_action). 
+    // Thus, the valid time interval for this action is after the \c TrafficCommand::timestamp
+    // for the respective action, which tells a traffic participant to perform an action, has 
+    // been sent, but must not be after a \c TrafficCommand::timestamp of the respective End-Actions-Action 
+    // or Abort-Actions-Action, which tells a traffic participant to end or abort that action. 
+    //
+    // Furthermore, a \c TrafficCommand::action.end_actions_action or a 
+    // \c TrafficCommand::action.abort_actions_action must not be sent after this action 
+    // (the \c TrafficCommandUpdate::dismissed_action) for a respective action has been sent.
+    //
+    // \note If more than one dismissed action is supplied it means that
+    // multiple actions are regarded as dismissed.
+    //
+    repeated DismissedAction dismissed_action = 4;
+    
+    // 
+    // \brief Action which a traffic participant dismisses.
+    //
+    message DismissedAction 
+    {
+        // Dismissed traffic action id from the perspective of this traffic participant, if any.
+        //
+        // \note A dismissed traffic action id identifies a \c TrafficCommand::action which cannot be executed or 
+        // completed by the traffic participant. This field must have the same value as the 
+        // \c ActionHeader::action_id of a prior sent \c TrafficCommand and must correspond
+        // to the same traffic participant.
+        //
+        optional Identifier dismissed_action_id = 1;
+
+        // Information about the reason of failure.
+        // 
+        // \note This is a custom, informal string without a standardized meaning. 
+        //
+        optional string failure_reason = 2;
+    }
+}