diff --git a/yang-models/_3gpp-common-subnetwork.yang b/yang-models/_3gpp-common-subnetwork.yang
index 59868e1c63d5702a691e9a06ce65f4a149cf88c2..2efde3b715e3df90ea1684a46379e7a8596b7e3f 100755
--- a/yang-models/_3gpp-common-subnetwork.yang
+++ b/yang-models/_3gpp-common-subnetwork.yang
@@ -20,7 +20,7 @@ module _3gpp-common-subnetwork {
   contact "https://www.3gpp.org/DynaReport/TSG-WG--S5--officials.htm?Itemid=464";
     
   description "Defines basic SubNetwork which will be augmented by other IOCs
-    Copyright 2024, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, 
+    Copyright 2025, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, 
     TTA, TTC). All rights reserved.";
   reference "3GPP TS 28.623
       Generic Network Resource Model (NRM)
@@ -35,6 +35,7 @@ module _3gpp-common-subnetwork {
       3GPP TS 28.620 
       Umbrella Information Model (UIM)";
   
+  revision 2025-03-25 { reference "CR-0527"; } 
   revision 2024-11-19 { reference "Add STM"; } 
   revision 2024-01-30 { reference CR-1337 ; } 
   revision 2024-01-30 { reference CR-0328 ; } 
@@ -214,34 +215,13 @@ module _3gpp-common-subnetwork {
 
   list SubNetwork {
     key id;
-    description "Represents a set of managed entities";
+    description "Represents a set of managed entities
+      Contained ManagedElements and SubNetworks shall be connected via 
+      YANG Schema-mount.";
 
     uses top3gpp:Top_Grp;
     container attributes {    
       uses SubNetworkGrp;
-      leaf-list parents {
-        description "Reference to all containg SubNetwork instances 
-          in strict order from the root subnetwork down to the immediate 
-          parent subnetwork.
-          If subnetworks form a containment hierarchy this is 
-          modeled using references between the child SubNetwork and the parent 
-          SubNetworks. 
-          This reference MUST NOT be present for the top level SubNetwork and 
-          MUST be present for other SubNetworks.";
-        type leafref {
-          path "../../../SubNetwork/id";  
-        } 
-      }
-      
-      leaf-list containedChildren{
-        description "Reference to all directly contained SubNetwork instances.
-          If subnetworks form a containment hierarchy this is 
-          modeled using references between the child SubNetwork and the parent 
-          SubNetwork.";
-        type leafref {
-          path "../../../SubNetwork/id";  
-        } 
-      }
     }
         
     uses meas3gpp:MeasurementSubtree {
@@ -285,7 +265,7 @@ module _3gpp-common-subnetwork {
     }    
 
     yangmnt:mount-point children-of-SubNetwork {
-      description "Mountpoint for ManagedElement";
+      description "Mountpoint for contained ManagedElements and SubNetworks";
       reference "RFC8528 YANG Schema Mount";
     }
     // augment external parts here