diff --git a/lcm/model/src/main/yang/lcm.yang b/lcm/model/src/main/yang/lcm.yang
index a03fff6..c9ec3ca 100644
--- a/lcm/model/src/main/yang/lcm.yang
+++ b/lcm/model/src/main/yang/lcm.yang
@@ -561,6 +561,10 @@
         output {
             uses common-header;
             uses status;
+            leaf payload {
+                type payload;
+                mandatory true;
+                    }
         }
     }
 
@@ -607,6 +611,10 @@
         output {
             uses common-header;
             uses status;
+            leaf payload {
+                type payload;
+                mandatory true;
+                         }
         }
     }
 
@@ -811,7 +819,7 @@
                 uses action-identifiers;
                 leaf payload {
                     type payload;
-                    mandatory false;
+                    mandatory true;
                 }
             }
             output {
@@ -985,6 +993,11 @@
         output {
             uses common-header;
             uses status;
+            leaf payload {
+                type payload;
+                mandatory true;
+                         }
+
         }
     }