diff --git a/33128/r18/TS33128IdentityAssociation.asn b/33128/r18/TS33128IdentityAssociation.asn
index 707aaa27da1deeba4edd67c8676e7299731b03fc..4b8c4998ab7790ac1d0b9ecc34d315fad37e2dd1 100644
--- a/33128/r18/TS33128IdentityAssociation.asn
+++ b/33128/r18/TS33128IdentityAssociation.asn
@@ -35,7 +35,8 @@ IEFAssociationRecord ::= SEQUENCE
     sUCI            [7] SUCI OPTIONAL,
     pEI             [8] PEI OPTIONAL,
     fiveGSTAIList   [9] FiveGSTAIList OPTIONAL,
-    gPSI            [10] GPSI OPTIONAL
+    gPSI            [10] GPSI OPTIONAL,
+    additionalCGIs  [11] AdditionalCGIs OPTIONAL
 }
 
 IEFDeassociationRecord ::= SEQUENCE
@@ -44,7 +45,8 @@ IEFDeassociationRecord ::= SEQUENCE
     fiveGGUTI       [2] FiveGGUTI,
     timestamp       [3] GeneralizedTime,
     nCGI            [4] NCGI,
-    nCGITime        [5] GeneralizedTime
+    nCGITime        [5] GeneralizedTime,
+    additionalCGIs  [6] AdditionalCGIs OPTIONAL
 }
 
 IEFKeepaliveMessage ::= SEQUENCE
@@ -54,6 +56,16 @@ IEFKeepaliveMessage ::= SEQUENCE
 
 FiveGGUTI ::= OCTET STRING (SIZE(10))
 
+AdditionalCGIs ::= SEQUENCE
+{
+    additionalNCGIList [1] SEQUENCE (SIZE (1..MAX)) OF AdditionalNCGI OPTIONAL
+}
+
+AdditionalNCGI ::= SEQUENCE
+{
+    nCGI      [1] NCGI
+}
+
 NCGI ::= SEQUENCE
 {
     pLMNID [1] PLMNID,