diff --git a/33128/r19/TS33128Payloads.asn b/33128/r19/TS33128Payloads.asn
index 5012f0410111ac682ebaa9c09da951b76c590fcc..f781f89319ace8c382d832a2c695639b8d697f9b 100644
--- a/33128/r19/TS33128Payloads.asn
+++ b/33128/r19/TS33128Payloads.asn
@@ -341,7 +341,8 @@ XIRIEvent ::= CHOICE
     mCXStartOfInterceptionWithEstablishedSession        [193] MCXStartOfInterceptionWithEstablishedSession,
     mCXManagementMessage                                [194] MCXManagementMessage,
     mCVideoTransmissionControlMessage                   [195] MCVideoTransmissionControlMessage,
-    mCDataFileDistribution                              [196] MCDataFileDistribution
+    mCDataFileDistribution                              [196] MCDataFileDistribution,
+    mCPTTFloorControlMessage                            [197] MCPTTFloorControlMessage
 }
 
 -- ==============
@@ -666,7 +667,8 @@ IRIEvent ::= CHOICE
     mCXStartOfInterceptionWithEstablishedSession        [193] MCXStartOfInterceptionWithEstablishedSession,
     mCXManagementMessage                                [194] MCXManagementMessage,
     mCVideoTransmissionControlMessage                   [195] MCVideoTransmissionControlMessage,
-    mCDataFileDistribution                              [196] MCDataFileDistribution
+    mCDataFileDistribution                              [196] MCDataFileDistribution,
+    mCPTTFloorControlMessage                            [197] MCPTTFloorControlMessage
 }
 
 IRITargetIdentifier ::= SEQUENCE
@@ -705,7 +707,8 @@ CCPDU ::= CHOICE
     iMSCCPDU            [6] IMSCCPDU,
     rCSCCPDU            [7] RCSCCPDU,
     mCVideoCCPDU        [8] MCVideoCCPDU,
-    mCDataCCPDU         [9] MCDataCCPDU
+    mCDataCCPDU         [9] MCDataCCPDU,
+    mCPTTCCPDU          [10] MCPTTCCPDU
 }
 
 -- ===========================
@@ -4785,7 +4788,8 @@ PTCTargetInformation  ::= SEQUENCE
 
 PTCIdentifiers  ::= CHOICE
 {
-    mCPTTID                    [1] UTF8String,
+    -- deprecatedMCPTT was deprecated in r19(19) version5(5)
+    deprecatedMCPTTID          [1] UTF8String,
     instanceIdentifierURN      [2] UTF8String,
     pTCChatGroupID             [3] PTCChatGroupID,
     iMPU                       [4] IMPU,
@@ -6174,6 +6178,13 @@ MCDataFileDistribution ::= CHOICE
     mCDataFileDownload [2] MCDataFileDownload
 }
 
+-- See clause 7.20.2.X for details of this structure
+MCPTTFloorControlMessage ::= SEQUENCE
+{
+    mCServiceIDOrGroupID                [1] MCServiceIDOrGroupID,
+    floorControlMessage                 [2] OCTET STRING
+}
+
 -- ====================
 -- MCService parameters
 -- ====================
@@ -6350,6 +6361,8 @@ MCDataCCPDU ::= CHOICE
 
 MCVideoCCPDU ::= OCTET STRING
 
+MCPTTCCPDU ::= OCTET STRING
+
 -- ===================
 -- 5G LALS definitions
 -- ===================
@@ -7808,7 +7821,8 @@ TargetIdentifier ::= CHOICE
     emailAddress           [14] EmailAddress,
     mCPTTID                [15] UTF8String,
     instanceIdentifierURN  [16] UTF8String,
-    pTCChatGroupID         [17] PTCChatGroupID
+    pTCChatGroupID         [17] PTCChatGroupID,
+    mCServiceIDOrGroupID   [18] MCServiceIDOrGroupID
 }
 
 TargetIdentifierProvenance ::= ENUMERATED