diff --git a/103280/TS_103_280.schema.json b/103280/TS_103_280.schema.json
index a6cca0c8e5af008e2ec6a4a572ec45b2f38f4e77..4c092ebdfec1d8892ed07c72f42480b27a21fd7e 100644
--- a/103280/TS_103_280.schema.json
+++ b/103280/TS_103_280.schema.json
@@ -203,6 +203,12 @@
     "ServiceAccessIdentifier": {
       "type": "string"
     },
+    "APN": {
+      "$ref": "#/$defs/LongString"
+    },
+    "DNN": {
+      "$ref": "#/$defs/LongString"
+    },
     "IPAddress": {
       "oneOf": [
         {
@@ -398,4 +404,4 @@
       ]
     }
   }
-}
+}
\ No newline at end of file
diff --git a/103280/TS_103_280.xsd b/103280/TS_103_280.xsd
index cdbafba15e631772c32221f2826f81dfd185ad17..283bebef48393eef7dafc0528a399984260dffeb 100644
--- a/103280/TS_103_280.xsd
+++ b/103280/TS_103_280.xsd
@@ -286,4 +286,10 @@
     <xs:simpleType name="ServiceAccessIdentifier">
         <xs:restriction base="xs:string"/>
     </xs:simpleType>
+    <xs:simpleType name="APN">
+        <xs:restriction base="LongString"/>
+    </xs:simpleType>
+    <xs:simpleType name="DNN">
+        <xs:restriction base="LongString"/>
+    </xs:simpleType>
 </xs:schema>