diff --git a/.simplifier/folder.settings.json b/.simplifier/folder.settings.json
new file mode 100644
index 00000000..de9eb648
--- /dev/null
+++ b/.simplifier/folder.settings.json
@@ -0,0 +1,4 @@
+{
+  "IncludeSubdirectories": true,
+  "PreferredFormat": "Xml"
+}
\ No newline at end of file
diff --git a/StructureDefinition/BARSServiceRequest-request-validation.xml b/StructureDefinition/BARSServiceRequest-request-validation.xml
index 108b1899..c5ff1dee 100644
--- a/StructureDefinition/BARSServiceRequest-request-validation.xml
+++ b/StructureDefinition/BARSServiceRequest-request-validation.xml
@@ -24,14 +24,6 @@
       <min value="1" />
       <max value="1" />
     </element>
-    <element id="ServiceRequest.category.coding.system">
-      <path value="ServiceRequest.category.coding.system" />
-      <fixedUri value="https://fhir.nhs.uk/CodeSystem/message-category-servicerequest" />
-    </element>
-    <element id="ServiceRequest.category.coding.code">
-      <path value="ServiceRequest.category.coding.code" />
-      <fixedCode value="validation" />
-    </element>
     <element id="ServiceRequest.subject">
       <path value="ServiceRequest.subject" />
       <type>