diff --git a/src/schema/rgsummary.xsd b/src/schema/rgsummary.xsd
index 8f759f80c..b9572fd7a 100644
--- a/src/schema/rgsummary.xsd
+++ b/src/schema/rgsummary.xsd
@@ -151,6 +151,7 @@
                                 <xsd:element name="StorageCapacityMax" type="xsd:string"/>
                                 <xsd:element name="HEPSPEC" type="xsd:string" />
                                 <xsd:element minOccurs="0" name="APELNormalFactor" type="xsd:string" />
+                                <xsd:element minOccurs="0" name="HEPScore23Percentage" type="xsd:string" />
                                 <xsd:element name="TapeCapacity" type="xsd:string"/>
                               </xsd:sequence>
                             </xsd:complexType>
diff --git a/template-resourcegroup.yaml b/template-resourcegroup.yaml
index c7a28b645..a9f51a54f 100644
--- a/template-resourcegroup.yaml
+++ b/template-resourcegroup.yaml
@@ -122,6 +122,7 @@ Resources:
     ### WLCGInformation (optional) is only for resources that are part of the WLCG
     # WLCGInformation:
     #   APELNormalFactor: 0.0
+    #   HEPScore23Percentage: 0.0
     #   AccountingName: <name>
     #   HEPSPEC: 0
     #   InteropAccounting: true