diff --git a/service-tests/dyamodb-invoice-test/add_record.bpmn b/service-tests/dyamodb-invoice-test/add_record.bpmn
index b938f7aa..ff7484e4 100644
--- a/service-tests/dyamodb-invoice-test/add_record.bpmn
+++ b/service-tests/dyamodb-invoice-test/add_record.bpmn
@@ -7,7 +7,7 @@
     <bpmn:sequenceFlow id="Flow_0vkhjsx" sourceRef="StartEvent_1" targetRef="Activity_07ukzg7" />
     <bpmn:sequenceFlow id="Flow_18da78l" sourceRef="Activity_07ukzg7" targetRef="Activity_14fy1ti" />
     <bpmn:endEvent id="Event_0k6yta0">
-      <bpmn:incoming>Flow_0p7k4j0</bpmn:incoming>
+      <bpmn:incoming>Flow_1q9i4l5</bpmn:incoming>
     </bpmn:endEvent>
     <bpmn:sequenceFlow id="Flow_0cklxrl" sourceRef="Activity_14fy1ti" targetRef="Activity_1kednyd" />
     <bpmn:scriptTask id="Activity_07ukzg7" name="Set Record" scriptFormat="python">
@@ -43,7 +43,7 @@
       <bpmn:incoming>Flow_18da78l</bpmn:incoming>
       <bpmn:outgoing>Flow_0cklxrl</bpmn:outgoing>
     </bpmn:serviceTask>
-    <bpmn:sequenceFlow id="Flow_0p7k4j0" sourceRef="Activity_1kednyd" targetRef="Event_0k6yta0" />
+    <bpmn:sequenceFlow id="Flow_0p7k4j0" sourceRef="Activity_1kednyd" targetRef="Activity_0xh3sa7" />
     <bpmn:serviceTask id="Activity_1kednyd" name="Query Record">
       <bpmn:extensionElements>
         <spiffworkflow:serviceTaskOperator id="aws/QueryDynamoTable" resultVariable="query_result">
@@ -57,15 +57,73 @@
       <bpmn:incoming>Flow_0cklxrl</bpmn:incoming>
       <bpmn:outgoing>Flow_0p7k4j0</bpmn:outgoing>
     </bpmn:serviceTask>
+    <bpmn:sequenceFlow id="Flow_1q9i4l5" sourceRef="Activity_0xh3sa7" targetRef="Event_0k6yta0" />
+    <bpmn:subProcess id="Activity_0xh3sa7" name="Do Sub-Process">
+      <bpmn:incoming>Flow_0p7k4j0</bpmn:incoming>
+      <bpmn:outgoing>Flow_1q9i4l5</bpmn:outgoing>
+      <bpmn:scriptTask id="Activity_0ss0o73" name="Set Record" scriptFormat="python">
+        <bpmn:extensionElements>
+          <spiffworkflow:unitTests>
+            <spiffworkflow:unitTest id="ScriptUnitTest_1mb67h7">
+              <spiffworkflow:inputJson>{}</spiffworkflow:inputJson>
+              <spiffworkflow:expectedOutputJson> {"inoice":{"contributorId":"999","contributorName":"Dan Funk","dueDate":"12/24/2023","invoiceAmount":100,"invoiceCurrency":"USD","invoiceId":"111"}</spiffworkflow:expectedOutputJson>
+            </spiffworkflow:unitTest>
+          </spiffworkflow:unitTests>
+        </bpmn:extensionElements>
+        <bpmn:incoming>Flow_1pptdsc</bpmn:incoming>
+        <bpmn:outgoing>Flow_1lxw2cc</bpmn:outgoing>
+        <bpmn:script>invoice = {
+    'contributorName': 'Dan Funk',
+    'contributorId': 999,
+    'invoiceId': 113,
+    'invoiceAmount': 1000.00,
+    'invoiceCurrency': 'USD',
+    'dueDate':'12/25/2023'
+}
+</bpmn:script>
+      </bpmn:scriptTask>
+      <bpmn:serviceTask id="Activity_0y8sxvy" name="Save Record">
+        <bpmn:extensionElements>
+          <spiffworkflow:serviceTaskOperator id="aws/AddDynamoItem" resultVariable="&#39;sub-response&#39;">
+            <spiffworkflow:parameters>
+              <spiffworkflow:parameter id="item_data" type="str" value="{ &#34;ContributorName&#34;: invoice.contributorName, &#34;ContributorId&#34;: invoice.contributorId, &#34;InvoiceId&#34;: invoice.invoiceId, &#34;InvoiceAmount&#34;: invoice.invoiceAmount, &#34;InvoiceCurrency&#34;: invoice.invoiceCurrency, &#34;DueDate&#34;: invoice.dueDate }" />
+              <spiffworkflow:parameter id="table_name" type="str" value="&#39;Invoice&#39;" />
+            </spiffworkflow:parameters>
+          </spiffworkflow:serviceTaskOperator>
+        </bpmn:extensionElements>
+        <bpmn:incoming>Flow_1lxw2cc</bpmn:incoming>
+        <bpmn:outgoing>Flow_1b5um7s</bpmn:outgoing>
+      </bpmn:serviceTask>
+      <bpmn:serviceTask id="Activity_0n8ix96" name="Query Record">
+        <bpmn:extensionElements>
+          <spiffworkflow:serviceTaskOperator id="aws/QueryDynamoTable" resultVariable="sub-query_result">
+            <spiffworkflow:parameters>
+              <spiffworkflow:parameter id="partition_key" type="str" value="invoice.contributorId" />
+              <spiffworkflow:parameter id="sort_key" type="str" value="invoice.invoiceId" />
+              <spiffworkflow:parameter id="table_name" type="str" value="&#39;Invoice&#39;" />
+            </spiffworkflow:parameters>
+          </spiffworkflow:serviceTaskOperator>
+        </bpmn:extensionElements>
+        <bpmn:incoming>Flow_1b5um7s</bpmn:incoming>
+        <bpmn:outgoing>Flow_0vcwfu4</bpmn:outgoing>
+      </bpmn:serviceTask>
+      <bpmn:sequenceFlow id="Flow_1lxw2cc" sourceRef="Activity_0ss0o73" targetRef="Activity_0y8sxvy" />
+      <bpmn:sequenceFlow id="Flow_1b5um7s" sourceRef="Activity_0y8sxvy" targetRef="Activity_0n8ix96" />
+      <bpmn:startEvent id="Event_027u0kd">
+        <bpmn:outgoing>Flow_1pptdsc</bpmn:outgoing>
+      </bpmn:startEvent>
+      <bpmn:sequenceFlow id="Flow_1pptdsc" sourceRef="Event_027u0kd" targetRef="Activity_0ss0o73" />
+      <bpmn:endEvent id="Event_02txdah">
+        <bpmn:incoming>Flow_0vcwfu4</bpmn:incoming>
+      </bpmn:endEvent>
+      <bpmn:sequenceFlow id="Flow_0vcwfu4" sourceRef="Activity_0n8ix96" targetRef="Event_02txdah" />
+    </bpmn:subProcess>
   </bpmn:process>
   <bpmndi:BPMNDiagram id="BPMNDiagram_1">
     <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Proccess_u0brn8z">
       <bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="StartEvent_1">
         <dc:Bounds x="122" y="182" width="36" height="36" />
       </bpmndi:BPMNShape>
-      <bpmndi:BPMNShape id="Event_0k6yta0_di" bpmnElement="Event_0k6yta0">
-        <dc:Bounds x="662" y="182" width="36" height="36" />
-      </bpmndi:BPMNShape>
       <bpmndi:BPMNShape id="Activity_0cfg4ai_di" bpmnElement="Activity_07ukzg7">
         <dc:Bounds x="210" y="160" width="100" height="80" />
         <bpmndi:BPMNLabel />
@@ -74,10 +132,16 @@
         <dc:Bounds x="370" y="160" width="100" height="80" />
         <bpmndi:BPMNLabel />
       </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="Event_0k6yta0_di" bpmnElement="Event_0k6yta0">
+        <dc:Bounds x="942" y="182" width="36" height="36" />
+      </bpmndi:BPMNShape>
       <bpmndi:BPMNShape id="Activity_1nrdz4d_di" bpmnElement="Activity_1kednyd">
-        <dc:Bounds x="520" y="160" width="100" height="80" />
+        <dc:Bounds x="530" y="160" width="100" height="80" />
         <bpmndi:BPMNLabel />
       </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="Activity_00oblrv_di" bpmnElement="Activity_0xh3sa7">
+        <dc:Bounds x="710" y="160" width="100" height="80" />
+      </bpmndi:BPMNShape>
       <bpmndi:BPMNEdge id="Flow_0vkhjsx_di" bpmnElement="Flow_0vkhjsx">
         <di:waypoint x="158" y="200" />
         <di:waypoint x="210" y="200" />
@@ -88,11 +152,53 @@
       </bpmndi:BPMNEdge>
       <bpmndi:BPMNEdge id="Flow_0cklxrl_di" bpmnElement="Flow_0cklxrl">
         <di:waypoint x="470" y="200" />
-        <di:waypoint x="520" y="200" />
+        <di:waypoint x="530" y="200" />
       </bpmndi:BPMNEdge>
       <bpmndi:BPMNEdge id="Flow_0p7k4j0_di" bpmnElement="Flow_0p7k4j0">
-        <di:waypoint x="620" y="200" />
-        <di:waypoint x="662" y="200" />
+        <di:waypoint x="630" y="200" />
+        <di:waypoint x="710" y="200" />
+      </bpmndi:BPMNEdge>
+      <bpmndi:BPMNEdge id="Flow_1q9i4l5_di" bpmnElement="Flow_1q9i4l5">
+        <di:waypoint x="810" y="200" />
+        <di:waypoint x="942" y="200" />
+      </bpmndi:BPMNEdge>
+    </bpmndi:BPMNPlane>
+  </bpmndi:BPMNDiagram>
+  <bpmndi:BPMNDiagram id="BPMNDiagram_0xx91fw">
+    <bpmndi:BPMNPlane id="BPMNPlane_1ka2ogk" bpmnElement="Activity_0xh3sa7">
+      <bpmndi:BPMNShape id="BPMNShape_1hnpkmt" bpmnElement="Activity_0ss0o73">
+        <dc:Bounds x="240" y="150" width="100" height="80" />
+        <bpmndi:BPMNLabel />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="BPMNShape_19usu0r" bpmnElement="Activity_0y8sxvy">
+        <dc:Bounds x="400" y="150" width="100" height="80" />
+        <bpmndi:BPMNLabel />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="BPMNShape_0qabtuk" bpmnElement="Activity_0n8ix96">
+        <dc:Bounds x="560" y="150" width="100" height="80" />
+        <bpmndi:BPMNLabel />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="Event_027u0kd_di" bpmnElement="Event_027u0kd">
+        <dc:Bounds x="122" y="172" width="36" height="36" />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="Event_02txdah_di" bpmnElement="Event_02txdah">
+        <dc:Bounds x="722" y="172" width="36" height="36" />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNEdge id="BPMNEdge_0bcc9c2" bpmnElement="Flow_1lxw2cc">
+        <di:waypoint x="340" y="190" />
+        <di:waypoint x="400" y="190" />
+      </bpmndi:BPMNEdge>
+      <bpmndi:BPMNEdge id="BPMNEdge_1j4lsjn" bpmnElement="Flow_1b5um7s">
+        <di:waypoint x="500" y="190" />
+        <di:waypoint x="560" y="190" />
+      </bpmndi:BPMNEdge>
+      <bpmndi:BPMNEdge id="Flow_1pptdsc_di" bpmnElement="Flow_1pptdsc">
+        <di:waypoint x="158" y="190" />
+        <di:waypoint x="240" y="190" />
+      </bpmndi:BPMNEdge>
+      <bpmndi:BPMNEdge id="Flow_0vcwfu4_di" bpmnElement="Flow_0vcwfu4">
+        <di:waypoint x="660" y="190" />
+        <di:waypoint x="722" y="190" />
       </bpmndi:BPMNEdge>
     </bpmndi:BPMNPlane>
   </bpmndi:BPMNDiagram>