diff --git a/33128/r18/TS33128Payloads.asn b/33128/r18/TS33128Payloads.asn
index cd6d3a8b7150f88c64848334f4a907ca8cd07a2d..4ec53af51483fcdce6db6eb0b6d85a6cfa2c9ab4 100644
--- a/33128/r18/TS33128Payloads.asn
+++ b/33128/r18/TS33128Payloads.asn
@@ -222,7 +222,11 @@ XIRIEvent ::= CHOICE
 
     -- HSS events, see clause 7.2.3.3
     hSSServingSystemMessage                             [133] HSSServingSystemMessage,
-    hSSStartOfInterceptionWithRegisteredTarget          [134] HSSStartOfInterceptionWithRegisteredTarget
+    hSSStartOfInterceptionWithRegisteredTarget          [134] HSSStartOfInterceptionWithRegisteredTarget,
+
+    --  NEF events, see clause 7.7.6.1
+    nEFAFSessionWithQoSProvision                        [4600] NEFAFSessionWithQoSProvision,
+    nEFAFSessionWithQoSNotification                     [4601] NEFAFSessionWithQoSNotification
 }
 
 -- ==============
@@ -437,7 +441,11 @@ IRIEvent ::= CHOICE
 
     -- HSS events, see clause 7.2.3.4
     hSSServingSystemMessage                             [133] HSSServingSystemMessage,
-    hSSStartOfInterceptionWithRegisteredTarget          [134] HSSStartOfInterceptionWithRegisteredTarget
+    hSSStartOfInterceptionWithRegisteredTarget          [134] HSSStartOfInterceptionWithRegisteredTarget,
+
+    -- NEF events, see clause 7.7.6.2
+    nEFAFSessionWithQoSProvision                        [4600] NEFAFSessionWithQoSProvision,
+    nEFAFSessionWithQoSNotification                     [4601] NEFAFSessionWithQoSNotification
 }
 
 IRITargetIdentifier ::= SEQUENCE
@@ -689,6 +697,26 @@ NEFExpectedUEBehaviourUpdate ::= SEQUENCE
     validityTime                          [12] Timestamp OPTIONAL
 }
 
+-- See clause 7.7.6.1.2 for details of this structure
+NEFAFSessionWithQoSProvision ::= SEQUENCE
+{
+    gPSI                                 [1] GPSI,
+    aFID                                 [2] AFID,
+    aFSessionWithQoSOpType               [3] AForASSessionWithQoSOpType,
+    aFSessionWithQoSSubscription         [4] SBIType OPTIONAL,
+    aFSessionWithQoSSubscriptionPatch    [5] SBIType OPTIONAL,
+    aFSessionWithQoSResponseCode         [6] AForASSessionWithQoSResponseCode
+}
+
+-- See clause 7.7.6.1.3 for details of this structure
+NEFAFSessionWithQoSNotification ::= SEQUENCE
+{
+    gPSI                                 [1] GPSI,
+    aFID                                 [2] AFID,
+    userPlaneNotificationData            [3] SBIType,
+    aForASSessionWithQoSResponseCode     [4] AForASSessionWithQoSResponseCode
+}
+
 -- ==========================
 -- Common SCEF/NEF parameters
 -- ==========================
@@ -797,6 +825,33 @@ ScheduledCommunicationType ::= ENUMERATED
     bidirectional(3)
 }
 
+AForASSessionWithQoSResponseCode ::= ENUMERATED
+{
+    oK200(1),
+    created201(2),
+    noContent204(3),
+    temporaryRedirect307(4),
+    permanentRedirect308(5),
+    badRequest400(6),
+    unauthorized401(7),
+    forbidden403(8),
+    notFound404(9),
+    notAcceptable406(10),
+    lengthRequired411(11),
+    unsupportedMediaType415(12),
+    tooManyRequests429(13),
+    internalServerError500(14),
+    serviceUnavailable503(15)
+}
+
+AForASSessionWithQoSOpType ::= ENUMERATED
+{
+    pOST(1),
+    pUT(2),
+    pATCH(3),
+    dELETE(4)
+}
+
 -- =================
 -- 5G NEF parameters
 -- =================