diff --git a/33128/r17/TS33128Payloads.asn b/33128/r17/TS33128Payloads.asn
index 9b605ee081112767a22333d5e1f49c2f1ffc28fc..9c4b564431e3c4bb8dd94f5f1b7a4e0c5f404c64 100644
--- a/33128/r17/TS33128Payloads.asn
+++ b/33128/r17/TS33128Payloads.asn
@@ -3682,7 +3682,8 @@ PDSummaryReport ::= SEQUENCE
     firstPacketTimestamp        [10] Timestamp,
     lastPacketTimestamp         [11] Timestamp,
     packetCount                 [12] INTEGER,
-    byteCount                   [13] INTEGER
+    byteCount                   [13] INTEGER,
+    perSessionTrigger           [14] BOOLEAN
 }
 
 -- ====================
diff --git a/33128/r17/urn_3GPP_ns_li_3GPPX1Extensions.xsd b/33128/r17/urn_3GPP_ns_li_3GPPX1Extensions.xsd
index 481c50d01daa0c9808d2b853c265448ff1db5407..e6519a078d96a62974465bc4e5bba5b6be441add 100644
--- a/33128/r17/urn_3GPP_ns_li_3GPPX1Extensions.xsd
+++ b/33128/r17/urn_3GPP_ns_li_3GPPX1Extensions.xsd
@@ -197,6 +197,7 @@
   <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>