diff --git a/33128/r18/TS33128Payloads.asn b/33128/r18/TS33128Payloads.asn
index 98b1d4c9556163fe01b6ef48d2a97ed723d82b68..909f2b3037d7f50fd7b520d03955c8511ac041ad 100644
--- a/33128/r18/TS33128Payloads.asn
+++ b/33128/r18/TS33128Payloads.asn
@@ -2246,7 +2246,8 @@ UDMServingSystemMessage ::= SEQUENCE
     gUMMEI                      [5] GUMMEI OPTIONAL,
     pLMNID                      [6] PLMNID OPTIONAL,
     servingSystemMethod         [7] UDMServingSystemMethod,
-    serviceID                   [8] ServiceID OPTIONAL
+    serviceID                   [8] ServiceID OPTIONAL,
+    roamingIndicator            [9] RoamingIndicator OPTIONAL
 }
 
 UDMSubscriberRecordChangeMessage ::= SEQUENCE
@@ -2405,6 +2406,9 @@ UDMInvalidParameters ::= SEQUENCE
     parameter    [1] UTF8String OPTIONAL,
     reason       [2] UTF8String OPTIONAL
 }
+
+RoamingIndicator ::= BOOLEAN
+
 -- ===================
 -- 5G SMSF definitions
 -- ===================