diff --git a/category_number_one/message-send/message_send.bpmn b/category_number_one/message-send/message_send.bpmn
index 8f8b6fd7..9495bcd5 100644
--- a/category_number_one/message-send/message_send.bpmn
+++ b/category_number_one/message-send/message_send.bpmn
@@ -49,18 +49,19 @@
   </bpmn:message>
   <bpmn:process id="message_receiver_process" name="Message Receiver Process">
     <bpmn:startEvent id="receive_message" name="Receive Message">
-      <bpmn:outgoing>Flow_11rbech</bpmn:outgoing>
+      <bpmn:outgoing>Flow_0505x87</bpmn:outgoing>
       <bpmn:messageEventDefinition id="MessageEventDefinition_0h33u2n" messageRef="message_send" />
     </bpmn:startEvent>
-    <bpmn:sequenceFlow id="Flow_11rbech" sourceRef="receive_message" targetRef="respond_to_message" />
-    <bpmn:sequenceFlow id="Flow_09mk0l4" sourceRef="respond_to_message" targetRef="Event_0q5otqd" />
     <bpmn:endEvent id="Event_0q5otqd">
-      <bpmn:incoming>Flow_09mk0l4</bpmn:incoming>
+      <bpmn:incoming>Flow_1273yit</bpmn:incoming>
     </bpmn:endEvent>
-    <bpmn:sendTask id="respond_to_message" name="Response To Message" messageRef="message_response">
-      <bpmn:incoming>Flow_11rbech</bpmn:incoming>
-      <bpmn:outgoing>Flow_09mk0l4</bpmn:outgoing>
-    </bpmn:sendTask>
+    <bpmn:sequenceFlow id="Flow_0505x87" sourceRef="receive_message" targetRef="respond_to_message" />
+    <bpmn:sequenceFlow id="Flow_1273yit" sourceRef="respond_to_message" targetRef="Event_0q5otqd" />
+    <bpmn:intermediateThrowEvent id="respond_to_message" name="Respond to Message">
+      <bpmn:incoming>Flow_0505x87</bpmn:incoming>
+      <bpmn:outgoing>Flow_1273yit</bpmn:outgoing>
+      <bpmn:messageEventDefinition id="MessageEventDefinition_0kakria" />
+    </bpmn:intermediateThrowEvent>
   </bpmn:process>
   <bpmndi:BPMNDiagram id="BPMNDiagram_1">
     <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Collaboration_0oye1os">
@@ -99,13 +100,13 @@
       <bpmndi:BPMNShape id="Participant_0mr0gg1_di" bpmnElement="message_receiver" isHorizontal="true">
         <dc:Bounds x="120" y="350" width="600" height="250" />
       </bpmndi:BPMNShape>
-      <bpmndi:BPMNEdge id="Flow_09mk0l4_di" bpmnElement="Flow_09mk0l4">
-        <di:waypoint x="450" y="480" />
-        <di:waypoint x="532" y="480" />
-      </bpmndi:BPMNEdge>
-      <bpmndi:BPMNEdge id="Flow_11rbech_di" bpmnElement="Flow_11rbech">
+      <bpmndi:BPMNEdge id="Flow_0505x87_di" bpmnElement="Flow_0505x87">
         <di:waypoint x="248" y="480" />
-        <di:waypoint x="350" y="480" />
+        <di:waypoint x="372" y="480" />
+      </bpmndi:BPMNEdge>
+      <bpmndi:BPMNEdge id="Flow_1273yit_di" bpmnElement="Flow_1273yit">
+        <di:waypoint x="408" y="480" />
+        <di:waypoint x="532" y="480" />
       </bpmndi:BPMNEdge>
       <bpmndi:BPMNShape id="Event_052nccg_di" bpmnElement="receive_message">
         <dc:Bounds x="212" y="462" width="36" height="36" />
@@ -116,9 +117,11 @@
       <bpmndi:BPMNShape id="Event_0q5otqd_di" bpmnElement="Event_0q5otqd">
         <dc:Bounds x="532" y="462" width="36" height="36" />
       </bpmndi:BPMNShape>
-      <bpmndi:BPMNShape id="Activity_1c4y3fx_di" bpmnElement="respond_to_message">
-        <dc:Bounds x="350" y="440" width="100" height="80" />
-        <bpmndi:BPMNLabel />
+      <bpmndi:BPMNShape id="Event_1p63v3w_di" bpmnElement="respond_to_message">
+        <dc:Bounds x="372" y="462" width="36" height="36" />
+        <bpmndi:BPMNLabel>
+          <dc:Bounds x="362" y="505" width="57" height="27" />
+        </bpmndi:BPMNLabel>
       </bpmndi:BPMNShape>
       <bpmndi:BPMNEdge id="Flow_1ueajoz_di" bpmnElement="message_send_flow">
         <di:waypoint x="300" y="217" />
@@ -129,11 +132,13 @@
           <dc:Bounds x="303" y="315" width="74" height="27" />
         </bpmndi:BPMNLabel>
       </bpmndi:BPMNEdge>
-      <bpmndi:BPMNEdge id="Flow_0lpwabe_di" bpmnElement="message_response_flow">
-        <di:waypoint x="450" y="450" />
-        <di:waypoint x="450" y="192" />
+      <bpmndi:BPMNEdge id="Flow_1n96n67_di" bpmnElement="message_response_flow">
+        <di:waypoint x="391" y="462" />
+        <di:waypoint x="400" y="329" />
+        <di:waypoint x="460" y="329" />
+        <di:waypoint x="460" y="195" />
         <bpmndi:BPMNLabel>
-          <dc:Bounds x="452" y="315" width="76" height="27" />
+          <dc:Bounds x="462" y="315" width="76" height="27" />
         </bpmndi:BPMNLabel>
       </bpmndi:BPMNEdge>
     </bpmndi:BPMNPlane>