diff --git a/proxies/shared/partials/Partial.Target.FaultRules.xml b/proxies/shared/partials/Partial.Target.FaultRules.xml
index b57f0852f..cedac2553 100644
--- a/proxies/shared/partials/Partial.Target.FaultRules.xml
+++ b/proxies/shared/partials/Partial.Target.FaultRules.xml
@@ -1,4 +1,4 @@
-<FaultRule name="combined_backend_fault_handler">
+hared/partials/Partial.Target.FaultRules.xml:FaultRule name="combined_backend_fault_handler">
     [% include './partials/Partial.Component.SetResponseDefaults.xml' %]
     <Step>
         <Name>ExtractVariables.ErrorMessage</Name>
@@ -72,6 +72,12 @@
         <Name>RaiseFault.404NotFound</Name>
         <Condition>response.status.code = 404</Condition>
     </Step>
+    <Step>
+        <Name>RaiseFault.413RequestTooLarge</Name>
+        <Condition>
+            response.status.code = 413 and response.content Like "*Request Too Long*"
+        </Condition>
+    </Step>
     <Step>
         <Name>RaiseFault.400BackendException.OdsCodeRequired</Name>
         <Condition>response.status.code = 400 and response.content Like "*odsCode must be provided*"</Condition>
diff --git a/proxies/shared/policies/RaiseFault.413RequestTooLarge.xml b/proxies/shared/policies/RaiseFault.413RequestTooLarge.xml
new file mode 100644
index 000000000..a2b113f6c
--- /dev/null
+++ b/proxies/shared/policies/RaiseFault.413RequestTooLarge.xml
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!--
+ This policy raises a 406 error response for a missing or invalid Accept header.
+
+ Valid values are:
+    * `*/*`
+    * `application/json`
+    * `application/vnd.api+json`
+
+ Raisefault policies stop the execution of the current flow and move to the error flow, which returns the error response defined here to the requesting application.
+
+ For more information on RaiseFault policies within Apigee see the following resource:
+    * https://docs.apigee.com/api-platform/reference/policies/raise-fault-policy
+-->
+<RaiseFault async="false" continueOnError="false" enabled="true" name="RaiseFault.413RequestTooLarge">
+    <DisplayName>RaiseFault.413RequestTooLarge</DisplayName>
+    <Properties/>
+    <FaultResponse>
+        <Set>
+            <Headers/>
+            <StatusCode>413</StatusCode>
+            <ReasonPhrase>Request message was larger than the service limit</ReasonPhrase>
+            <Payload variablePrefix="@" variableSuffix="#">
+                {
+                    "errors" : [
+                        {
+                            "id" : "@messageid#.0",
+                            "code" : "CM_TOO_LARGE",
+                            "links" : {
+                                "about" : "{{ ERROR_ABOUT_LINK }}"
+                            },
+                            "status" : "413",
+                            "title" : "Request too large",
+                            "detail" : "Request message was larger than the service limit",
+                            "source" : {
+                                "header" : "Accept"
+                            }
+                        }
+                    ]
+                }
+            </Payload>
+        </Set>
+    </FaultResponse>
+    <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
+</RaiseFault>