diff --git a/33128/r19/TS33128Payloads.asn b/33128/r19/TS33128Payloads.asn
index 6820cd2e8e3b2243a69f470f55df214a2edf9943..0bdf7478f5d545a1588fde4df79f921abc3ec4d0 100644
--- a/33128/r19/TS33128Payloads.asn
+++ b/33128/r19/TS33128Payloads.asn
@@ -345,7 +345,10 @@ XIRIEvent ::= CHOICE
     mCPTTFloorControlMessage                            [197] MCPTTFloorControlMessage,
 
     -- IMS events, see clause 7.12.4.2, continued from tag 181
-    iMSDataChannelApplicationResponse               [198] IMSDataChannelApplicationResponse
+    iMSDataChannelApplicationResponse                   [198] IMSDataChannelApplicationResponse,
+
+    -- NEF events, see clause 7.7.2.1.X continued from tag 170
+    uASNFInformation                                    [199] UASNFInformation
     }
 
 -- ==============
@@ -674,7 +677,10 @@ IRIEvent ::= CHOICE
     mCPTTFloorControlMessage                            [197] MCPTTFloorControlMessage,
 
     -- IMS events, see clause 7.12.4.2, continued from tag 181
-    iMSDataChannelApplicationResponse                   [198] IMSDataChannelApplicationResponse
+    iMSDataChannelApplicationResponse                   [198] IMSDataChannelApplicationResponse,
+
+    -- NEF events, see clause 7.7.2.1.X continued from tag 170
+    uASNFInformation                                    [199] UASNFInformation
 }
 
 IRITargetIdentifier ::= SEQUENCE
@@ -987,6 +993,15 @@ NEF5GVNGroupQuery ::= SEQUENCE
     fiveGLanParametersProvision [3] SBIType
 }
 
+-- See clause 7.7.2.1.X for details of this structure
+UASNFInformation ::=SEQUENCE
+{
+    uASTargetIdentifiers        [1] SEQUENCE (SIZE(1..MAX)) OF UASTargetIdentifier,
+    uASNFProcedure              [2] UASNFProcedure,
+    uASNFUASInformation         [3] UASNFUASInformation
+}
+
+
 -- ==========================
 -- Common SCEF/NEF parameters
 -- ==========================
@@ -1149,6 +1164,36 @@ AFID ::= UTF8String
 
 NEFID ::= UTF8String
 
+-- =================
+-- 5G NEF/UAS NF parameters
+-- =================
+
+UASNFProcedure ::= ENUMERATED
+{
+    configurationCreate(1),
+    configurationRetrieve(2),
+    configurationUpdate(3),
+    configurationModify(4),
+    configurationDelete(5),
+    authenticationAuthorize(6),
+    authenticationNotification(7)
+}
+
+UASTargetIdentifier ::= CHOICE
+{
+    gPSI              [1] GPSI,
+    cAALevelUAVID     [2] UTF8String,
+    pEI               [3] PEI
+}
+
+UASNFUASInformation ::= CHOICE
+{
+    uAVFlightAssistance          [1] SBIType,
+    uAVFlightAssistancePatch     [2] SBIType,
+    nAFAuthenticateRequest       [3] SBIType,
+    nAFAuthenticateAccept        [4] SBIType
+}
+
 
 -- ==================
 -- SCEF definitions
diff --git a/33128/r19/urn_3GPP_ns_li_3GPPX1Extensions.xsd b/33128/r19/urn_3GPP_ns_li_3GPPX1Extensions.xsd
index 8bb00d0aa63792348031d7e210d3fc463fe5ba2a..276904a56038c31511662b4eccea4723695d99e6 100644
--- a/33128/r19/urn_3GPP_ns_li_3GPPX1Extensions.xsd
+++ b/33128/r19/urn_3GPP_ns_li_3GPPX1Extensions.xsd
@@ -459,4 +459,9 @@
     </xs:restriction>
   </xs:simpleType>
 
+  <xs:element name="CAALevelUAVID" type="CAALevelUAVID"/>
+  <xs:simpleType name="CAALevelUAVID">
+      <xs:restriction base="xs:string"/>
+  </xs:simpleType>
+
 </xs:schema>