diff --git a/33128/r18/TS33128Payloads.asn b/33128/r18/TS33128Payloads.asn
index 5684a1a0465e209a449cc09b5811728c5610ced1..a571b7411c6521b9d4781d3a542f4e2611fcddee 100644
--- a/33128/r18/TS33128Payloads.asn
+++ b/33128/r18/TS33128Payloads.asn
@@ -527,7 +527,8 @@ CCPDU ::= CHOICE
     nIDDCCPDU           [4] NIDDCCPDU,
     pTCCCPDU            [5] PTCCCPDU,
 
-    iMSCCPDU            [6] IMSCCPDU
+    iMSCCPDU            [6] IMSCCPDU,
+    rCSCCPDU            [7] RCSCCPDU
 }
 
 -- ===========================
@@ -4441,6 +4442,10 @@ RCSCapabilityDiscovery ::= SEQUENCE
     location                      [5] Location OPTIONAL
 }
 
+RCSCCPDU ::= CHOICE
+{
+    encapsulatedRCSPayload [1] EncapsulatedRCSPayload
+}
 
 -- ==============
 -- RCS Parameters