diff --git a/datamodels/2.x/itop-change-mgmt-itil/datamodel.itop-change-mgmt-itil.xml b/datamodels/2.x/itop-change-mgmt-itil/datamodel.itop-change-mgmt-itil.xml
index 4b765f69c..40987c661 100755
--- a/datamodels/2.x/itop-change-mgmt-itil/datamodel.itop-change-mgmt-itil.xml
+++ b/datamodels/2.x/itop-change-mgmt-itil/datamodel.itop-change-mgmt-itil.xml
@@ -902,6 +902,17 @@
         </states>
       </lifecycle>
       <methods>
+				<method id="GetTicketRefFormat">
+					<static>true</static>
+					<access>public</access>
+					<type>Overload-DBObject</type>
+					<code><![CDATA[
+        public static function GetTicketRefFormat()
+        {
+                return 'C-%06d';
+        }
+        ]]></code>
+				</method>
         <method id="SetClosureDate">
           <comment><![CDATA[/**
 	 * To be deprecated: use SetCurrentDate() instead
diff --git a/datamodels/2.x/itop-change-mgmt/datamodel.itop-change-mgmt.xml b/datamodels/2.x/itop-change-mgmt/datamodel.itop-change-mgmt.xml
index 4b8716687..37be275d6 100755
--- a/datamodels/2.x/itop-change-mgmt/datamodel.itop-change-mgmt.xml
+++ b/datamodels/2.x/itop-change-mgmt/datamodel.itop-change-mgmt.xml
@@ -452,6 +452,17 @@
                 </states>
             </lifecycle>
             <methods>
+				<method id="GetTicketRefFormat">
+					<static>true</static>
+					<access>public</access>
+					<type>Overload-DBObject</type>
+					<code><![CDATA[
+        public static function GetTicketRefFormat()
+        {
+                return 'C-%06d';
+        }
+        ]]></code>
+				</method>
                 <method id="SetApprovalDate">
                     <comment><![CDATA[/**
 	 * To be deprecated: use SetCurrentDate() instead
diff --git a/datamodels/2.x/itop-incident-mgmt-itil/datamodel.itop-incident-mgmt-itil.xml b/datamodels/2.x/itop-incident-mgmt-itil/datamodel.itop-incident-mgmt-itil.xml
index 04cc671a7..f87f6db50 100755
--- a/datamodels/2.x/itop-incident-mgmt-itil/datamodel.itop-incident-mgmt-itil.xml
+++ b/datamodels/2.x/itop-incident-mgmt-itil/datamodel.itop-incident-mgmt-itil.xml
@@ -947,6 +947,17 @@
 				</states>
 			</lifecycle>
 			<methods>
+				<method id="GetTicketRefFormat">
+					<static>true</static>
+					<access>public</access>
+					<type>Overload-DBObject</type>
+					<code><![CDATA[
+        public static function GetTicketRefFormat()
+        {
+                return 'I-%06d';
+        }
+        ]]></code>
+				</method>
 				<method id="SetAssignedDate">
 					<comment><![CDATA[/**
 	 * To be deprecated: use SetCurrentDate() instead
diff --git a/datamodels/2.x/itop-problem-mgmt/datamodel.itop-problem-mgmt.xml b/datamodels/2.x/itop-problem-mgmt/datamodel.itop-problem-mgmt.xml
index b36a5e68a..bd6e148b5 100755
--- a/datamodels/2.x/itop-problem-mgmt/datamodel.itop-problem-mgmt.xml
+++ b/datamodels/2.x/itop-problem-mgmt/datamodel.itop-problem-mgmt.xml
@@ -362,6 +362,17 @@
                 </states>
             </lifecycle>
             <methods>
+				<method id="GetTicketRefFormat">
+					<static>true</static>
+					<access>public</access>
+					<type>Overload-DBObject</type>
+					<code><![CDATA[
+        public static function GetTicketRefFormat()
+        {
+                return 'P-%06d';
+        }
+        ]]></code>
+				</method>
                 <method id="SetAssignedDate">
                     <comment><![CDATA[/**
 	 * To be deprecated: use SetCurrentDate() instead
diff --git a/datamodels/2.x/itop-request-mgmt-itil/datamodel.itop-request-mgmt-itil.xml b/datamodels/2.x/itop-request-mgmt-itil/datamodel.itop-request-mgmt-itil.xml
index 47e8ff3c1..bb68432d5 100755
--- a/datamodels/2.x/itop-request-mgmt-itil/datamodel.itop-request-mgmt-itil.xml
+++ b/datamodels/2.x/itop-request-mgmt-itil/datamodel.itop-request-mgmt-itil.xml
@@ -1074,6 +1074,17 @@
 				</states>
 			</lifecycle>
 			<methods>
+				<method id="GetTicketRefFormat">
+					<static>true</static>
+					<access>public</access>
+					<type>Overload-DBObject</type>
+					<code><![CDATA[
+        public static function GetTicketRefFormat()
+        {
+                return 'R-%06d';
+        }
+        ]]></code>
+				</method>
 				<method id="SetAssignedDate">
 					<comment><![CDATA[/**
 	 * To be deprecated: use SetCurrentDate() instead
diff --git a/datamodels/2.x/itop-request-mgmt/datamodel.itop-request-mgmt.xml b/datamodels/2.x/itop-request-mgmt/datamodel.itop-request-mgmt.xml
index 600d25ae1..1419b12d1 100755
--- a/datamodels/2.x/itop-request-mgmt/datamodel.itop-request-mgmt.xml
+++ b/datamodels/2.x/itop-request-mgmt/datamodel.itop-request-mgmt.xml
@@ -1086,6 +1086,17 @@
                 </states>
             </lifecycle>
             <methods>
+				<method id="GetTicketRefFormat">
+					<static>true</static>
+					<access>public</access>
+					<type>Overload-DBObject</type>
+					<code><![CDATA[
+        public static function GetTicketRefFormat()
+        {
+                return 'R-%06d';
+        }
+        ]]></code>
+				</method>
                 <method id="SetAssignedDate">
                     <comment><![CDATA[/**
 	 * To be deprecated: use SetCurrentDate() instead
diff --git a/datamodels/2.x/itop-tickets/datamodel.itop-tickets.xml b/datamodels/2.x/itop-tickets/datamodel.itop-tickets.xml
index 519d45fc3..4564034f5 100755
--- a/datamodels/2.x/itop-tickets/datamodel.itop-tickets.xml
+++ b/datamodels/2.x/itop-tickets/datamodel.itop-tickets.xml
@@ -223,31 +223,18 @@
 					<code><![CDATA[
         protected function MakeTicketRef($iNextId)
         {
-                switch(get_class($this))
-                {
-                        case 'UserRequest':
-                        $sFormat = 'R-%06d';
-                        break;
-
-                        case 'Incident':
-                        $sFormat = 'I-%06d';
-                        break;
-
-                        case 'Change':
-                        case 'RoutineChange':
-                        case 'EmergencyChange':
-                        case 'NormalChange':
-                        $sFormat = 'C-%06d';
-                        break;
-
-                        case 'Problem':
-                        $sFormat = 'P-%06d';
-                        break;
-
-                        default:
-                        $sFormat = 'T-%06d';
-                }
-                return sprintf($sFormat, $iNextId);
+                return sprintf(static::GetTicketRefFormat(), $iNextId);
+        }
+        ]]></code>
+				</method>
+				<method id="GetTicketRefFormat">
+					<static>true</static>
+					<access>public</access>
+					<type>Overload-DBObject</type>
+					<code><![CDATA[
+        public static function GetTicketRefFormat()
+        {
+                return 'T-%06d';
         }
         ]]></code>
 				</method>