diff --git a/102232-1/LI-PS-PDU.asn b/102232-1/LI-PS-PDU.asn
index 47b30ce33daca37ed6b13d35c8b106c2741caa36..0d707e55d6e1096f7afd8d83510448ab9154315f 100644
--- a/102232-1/LI-PS-PDU.asn
+++ b/102232-1/LI-PS-PDU.asn
@@ -9,9 +9,11 @@ IMPORTS
     -- Any of the IMPORTs may be commented out if they are not used (see clause A.3)
 
     -- from ETSI TS 103 280 [44]
+    GNSSLocation,
     LIID,
-    WGS84CoordinateDecimal,
-    GNSSLocation
+    LongString,
+    ShortString,
+    WGS84CoordinateDecimal
         FROM Common-Parameters
         {itu-t(0) identified-organization(4) etsi(0) common-parameters(3280) version271(271)}
 
@@ -269,7 +271,8 @@ TimeStampQualifier ::= ENUMERATED
 HI4Payload ::= CHOICE
 {
     threeGPP-LI-Notification [1] TS33128Payloads.LINotificationPayload,
-    ...
+    ...,
+    hi4Notification          [2] HI4Notification
 }
 
 -- ====================================
@@ -478,7 +481,6 @@ GcseIRI ::= CHOICE
     ...
 }
 
-
 -- ===========================
 -- Definitions for TRI Payload
 -- ===========================
@@ -671,6 +673,61 @@ EncryptedPayloadType ::= ENUMERATED
         -- encrypted payload is ETSI TS 102 232-1 (the present document)
 }
 
+-- =================================
+-- Definitions for HI4 notifications
+-- =================================
+
+HI4Notification ::= CHOICE
+{
+    liActivated                 [1] HI4LINotification,
+    liDeactivated               [2] HI4LINotification,
+    liModified                  [3] HI4LINotification,
+    ...
+}
+
+HI4LINotification ::= SEQUENCE
+{
+    activationTime              [1] GeneralizedTime OPTIONAL,
+    deactivationTime            [2] GeneralizedTime OPTIONAL,
+    targetIdentifiers           [3] SEQUENCE OF TargetIdentifier OPTIONAL,
+    serviceType                 [4] DictionaryEntry OPTIONAL,
+    targetIdentifierSubtype     [5] DictionaryEntry OPTIONAL,
+    interceptType               [6] InterceptType OPTIONAL,
+    ownerIdentifier             [7] Common-Parameters.ShortString OPTIONAL,
+    authorizationReference      [8] Common-Parameters.LongString OPTIONAL,
+    ...
+}
+
+TargetIdentifier ::= CHOICE
+{
+    targetIdentifierFormat      [1] TargetIdentifierFormat,
+    ...
+}
+
+TargetIdentifierFormat ::= SEQUENCE
+{
+    formatOwner                 [1] Common-Parameters.ShortString,
+    formatName                  [2] Common-Parameters.ShortString,
+    targetValue                 [3] Common-Parameters.LongString,
+    ...
+}
+
+InterceptType ::= ENUMERATED
+{
+    iriAndCc(1),
+    iriOnly(2),
+    ccOnly(3),
+    ...
+}
+
+DictionaryEntry ::= SEQUENCE
+{
+    owner                       [1] Common-Parameters.ShortString,
+    name                        [2] Common-Parameters.ShortString,
+    value                       [3] Common-Parameters.ShortString,
+    ...
+}
+
 -- ===================================
 -- Common Parameters
 -- ===================================
diff --git a/103280/TS_103_280.asn1 b/103280/TS_103_280.asn1
index ac8c776882aa81829cd521b7a64779900b3b1bb0..49d548faeb27bf628a8d3b2646e58b664e53f571 100644
--- a/103280/TS_103_280.asn1
+++ b/103280/TS_103_280.asn1
@@ -7,6 +7,10 @@ DEFINITIONS IMPLICIT TAGS EXTENSIBILITY IMPLIED ::= BEGIN
 
 commonParameterDomainId OBJECT IDENTIFIER ::= {itu-t(0) identified-organization(4) etsi(0) common-parameters(3280) version271(271)}
 
+-- XXX Temporary stubs for TS 102 232-1 CR 124. Remove once MR !328 for TS 103 280 CR 042 is merged.
+ShortString ::= NULL
+LongString ::= NULL
+
 -- Common Parameters (below are as defined in clause 6)
 
 LIID ::= OCTET STRING (SIZE (1..25))