diff --git a/33128/r18/TS33128Payloads.asn b/33128/r18/TS33128Payloads.asn
index 8ee3f99437dcbb2d774a0084c60f85d5aa71b5c1..532b13dd228a8da7dd494fd3b0f9b8d48431f9b3 100644
--- a/33128/r18/TS33128Payloads.asn
+++ b/33128/r18/TS33128Payloads.asn
@@ -4110,7 +4110,8 @@ PDSummaryReport ::= SEQUENCE
     firstPacketTimestamp        [10] Timestamp,
     lastPacketTimestamp         [11] Timestamp,
     packetCount                 [12] INTEGER,
-    byteCount                   [13] INTEGER
+    byteCount                   [13] INTEGER,
+    useSessionTrigger           [14] BOOLEAN
 }
 
 -- ====================
diff --git a/33128/r18/urn_3GPP_ns_li_3GPPX1Extensions.xsd b/33128/r18/urn_3GPP_ns_li_3GPPX1Extensions.xsd
index bc256677153c454d2c8f6fd7fb10d1379affc497..908cebc48f3aa2f6f7804d45220eeefd35d68f86 100644
--- a/33128/r18/urn_3GPP_ns_li_3GPPX1Extensions.xsd
+++ b/33128/r18/urn_3GPP_ns_li_3GPPX1Extensions.xsd
@@ -208,6 +208,7 @@
   <xs:complexType name="PDSRParameters">
     <xs:sequence>
       <xs:element name="PDSRTriggerType" type="PDSRTriggerType" minOccurs="1" maxOccurs="unbounded"></xs:element>
+      <xs:element name="useSessionTriggers" type="xs:boolean" minOccurs="0" ></xs:element>
     </xs:sequence>
   </xs:complexType>