diff --git a/33128/r18/TS33128Payloads.asn b/33128/r18/TS33128Payloads.asn
index eae52be1390b0c7a95f66beaf7d0c596976daca2..cd6d3a8b7150f88c64848334f4a907ca8cd07a2d 100644
--- a/33128/r18/TS33128Payloads.asn
+++ b/33128/r18/TS33128Payloads.asn
@@ -5248,8 +5248,10 @@ SMSOverNASIndicator ::= ENUMERATED
 
 SNSSAI ::= SEQUENCE
 {
-    sliceServiceType    [1] INTEGER (0..255),
-    sliceDifferentiator [2] OCTET STRING (SIZE(3)) OPTIONAL
+    sliceServiceType               [1] INTEGER (0..255),
+    sliceDifferentiator            [2] OCTET STRING (SIZE(3)) OPTIONAL,
+    mappedHPLMNSliceServiceType    [3] INTEGER (0..255) OPTIONAL,
+    mappedHPLMNSliceDifferentiator [4] OCTET STRING (SIZE(3)) OPTIONAL
 }
 
 SubscriberIdentifier ::= CHOICE