diff --git a/yang-models/_3gpp-nr-nrm-rrmpolicy.yang b/yang-models/_3gpp-nr-nrm-rrmpolicy.yang
index 3480c753c137d9663254d59413850f33698d3492..cfe977059492f51fbb080086288c153f9ed2d111 100755
--- a/yang-models/_3gpp-nr-nrm-rrmpolicy.yang
+++ b/yang-models/_3gpp-nr-nrm-rrmpolicy.yang
@@ -50,9 +50,15 @@ module _3gpp-nr-nrm-rrmpolicy {
     leaf resourceType {
       description "The resourceType attribute defines type of resource (PRB, 
         RRC connected users, DRB usage etc.) that is subject to policy. 
-       Valid values are 'PRB', 'RRC' or 'DRB'";
+       Valid values are 'PRB', 'PRB_UL', 'PRB_DL', 'RRC' or 'DRB'";
       mandatory true;
-      type string;
+      type enumeration {
+        enum PRB;
+        enum PRB_UL;
+        enum PRB_DL;
+        enum RRC;
+        enum DRB;
+      }
     }
 
     list rRMPolicyMemberList{