diff --git a/TS26510_CommonData.yaml b/TS26510_CommonData.yaml
index 39e5f35273a410a48c6b7121a6cbf5b0164a4502..20ad124767c48b357287d4e641ce308d1efe2cbe 100644
--- a/TS26510_CommonData.yaml
+++ b/TS26510_CommonData.yaml
@@ -113,6 +113,18 @@ components:
           $ref: 'TS29514_Npcf_PolicyAuthorization.yaml#/components/schemas/MediaType'
         mediaTransportParameters:
           $ref: 'TS29571_CommonData.yaml#/components/schemas/ProtocolDescription'
+        uplinkMultiplexedMediaInfos:
+          type: array
+          items:
+            $ref: 'TS29514_Npcf_PolicyAuthorization.yaml#/components/schemas/MpxMediaInfo'
+          minItems: 1
+          description: Multiplexed media identification information for the uplink IP flow.
+        downlinkMultiplexedMediaInfos:
+          type: array
+          items:
+            $ref: 'TS29514_Npcf_PolicyAuthorization.yaml#/components/schemas/MpxMediaInfo'
+          minItems: 1
+          description: Multiplexed media identification information for the downlink IP flow.
 
     UnidirectionalQoSSpecification:
       type: object
diff --git a/TS29514_Npcf_PolicyAuthorization.yaml b/TS29514_Npcf_PolicyAuthorization.yaml
index 05aea80bc6effe6fae08074d4b127ccec63e79a7..8e872074c9c5694ba782e8d15eaaae3a8298c2a0 100644
--- a/TS29514_Npcf_PolicyAuthorization.yaml
+++ b/TS29514_Npcf_PolicyAuthorization.yaml
@@ -2,14 +2,14 @@ openapi: 3.0.0
 
 info:
   title: Npcf_PolicyAuthorization Service API
-  version: 1.4.0-alpha.4
+  version: 1.4.0-alpha.5
   description: |
     PCF Policy Authorization Service.  
     © 2025, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC).  
     All rights reserved.
 
 externalDocs:
-  description: 3GPP TS 29.514 V19.3.0; 5G System; Policy Authorization Service; Stage 3.
+  description: 3GPP TS 29.514 V19.4.0; 5G System; Policy Authorization Service; Stage 3.
   url: 'https://www.3gpp.org/ftp/Specs/archive/29_series/29.514/'
 
 servers:
@@ -1450,6 +1450,18 @@ components:
           $ref: '#/components/schemas/FlowUsage'
         evSubsc:
           $ref: '#/components/schemas/EventsSubscReqData'
+        mpxMediaUlInfos:
+          type: array
+          items:
+            $ref: '#/components/schemas/MpxMediaInfo'
+          minItems: 1
+          description: Multiplexed media identification information for the Uplink IP flow.
+        mpxMediaDlInfos:
+          type: array
+          items:
+            $ref: '#/components/schemas/MpxMediaInfo'
+          minItems: 1
+          description: Multiplexed media identification information for the Downlink IP flow.
 
     MediaSubComponentRm:
       description: >
@@ -1500,6 +1512,20 @@ components:
           $ref: '#/components/schemas/FlowUsage'
         evSubsc:
           $ref: '#/components/schemas/EventsSubscReqDataRm'
+        mpxMediaUlInfos:
+          type: array
+          items:
+            $ref: '#/components/schemas/MpxMediaInfo'
+          minItems: 1
+          description: Multiplexed media identification information for the Uplink IP flow.
+          nullable: true
+        mpxMediaDlInfos:
+          type: array
+          items:
+            $ref: '#/components/schemas/MpxMediaInfo'
+          minItems: 1
+          description: Multiplexed media identification information for the Downlink IP flow.
+          nullable: true
       nullable: true
 
     EventsNotification:
@@ -1655,6 +1681,12 @@ components:
           $ref: 'TS29571_CommonData.yaml#/components/schemas/SatelliteId'
         rateLimitRepo:
           $ref: '#/components/schemas/RateLimitRepo'
+        dnaiChgType:
+          $ref: 'TS29571_CommonData.yaml#/components/schemas/DnaiChangeType'
+        sourceDnai:
+          $ref: 'TS29571_CommonData.yaml#/components/schemas/Dnai'
+        targetDnai:
+          $ref: 'TS29571_CommonData.yaml#/components/schemas/Dnai'
 
     AfEventSubscription:
       description: Describes the event information delivered in the subscription.
@@ -2651,6 +2683,32 @@ components:
           minItems: 1
           description: Identifications of the non-GBR service data flows.
 
+    MpxMediaInfo:
+      description: Contains the Multiplexed Media Identification Information.
+      type: object
+      properties:
+        ssrcId:
+          $ref: 'TS29571_CommonData.yaml#/components/schemas/Uint32'
+        payloadType:
+          type: integer
+          minimum: 0
+          maximum: 127
+        identificationTag:
+          type: string
+        rtpSdesHdrExtId:
+          $ref: 'TS29571_CommonData.yaml#/components/schemas/Uinteger'
+        rtcpPacketType:
+          type: integer
+          minimum: 0
+          maximum: 255
+      anyOf:
+        - required: [ ssrcId ]
+        - required: [ payloadType ]
+        - required: [ identificationTag ]
+        - required: [ rtcpPacketType ]
+        - required: [ identificationTag, rtpSdesHdrExtId ]
+
+
 #
 # EXTENDED PROBLEMDETAILS
 #
@@ -2808,6 +2866,7 @@ components:
           - TP_NOT_YET_OCURRED
           - ROUT_REQ_NOT_AUTHORIZED
           - DIRECT_NOTIF_NOT_POSSIBLE
+          - MPX_MEDIA_NOT_SUPPORTED_IN_UE
       - type: string
         description: >
           This string provides forward-compatibility with future extensions to the enumeration
@@ -2892,16 +2951,16 @@ components:
       description: |
         Indicates the notification type for QoS Notification Control.
         Possible values are:
-        - GUARANTEED: The QoS targets of one or more SDFs are guaranteed. When ExtQoS_v2 feature
+        - GUARANTEED: The QoS targets of one or more SDFs are guaranteed. When ExtQoSR19 feature
           is enabled, The QoS targets of one or more SDFs are guaranteed again in both DL and UL
           directions.
         - NOT_GUARANTEED: The QoS targets of one or more SDFs are not being guaranteed. When
-          ExtQoS_v2 feature is enabled, The QoS targets of one or more SDFs are not being
+          ExtQoSR19 feature is enabled, The QoS targets of one or more SDFs are not being
           guaranteed in both DL and UL directions.
         - NOT_GUARANTEED_DL: The QoS targets of one or more SDFs are not being guaranteed in DL
-          directions.
+          direction.
         - NOT_GUARANTEED_UL: The QoS targets of one or more SDFs are not being guaranteed in DL
-          directions.
+          direction.
 
     TerminationCause:
       description: >
@@ -2918,6 +2977,8 @@ components:
           - SPONSORED_DATA_CONNECTIVITY_DISALLOWED
           - REQUEST_QOS_NOT_SUPPORTED_IN_PLMN
           - UE_ADDR_RELEASE
+          - SMF_FAILURE
+          - REFLECTIVE_QOS_NOT_SUPPORTED_IN_UE
       - type: string
         description: >
           This string provides forward-compatibility with future extensions to the enumeration