diff --git a/release/models/aft/openconfig-aft-common.yang b/release/models/aft/openconfig-aft-common.yang
index cd3292b6a..4cd7bb63f 100644
--- a/release/models/aft/openconfig-aft-common.yang
+++ b/release/models/aft/openconfig-aft-common.yang
@@ -419,7 +419,7 @@ submodule openconfig-aft-common {
       "Outer header fields of encapsulation applied on a next-hop";
 
     leaf ttl {
-      type uint32;
+      type uint8;
       description
         "This leaf reflects the configured TTL value that is used in the outer
          header during packet encapsulation. When this leaf is not set, the TTL
@@ -428,7 +428,7 @@ submodule openconfig-aft-common {
     }
 
     leaf tos {
-      type uint16;
+      type uint8;
       description
         "This leaf reflects the configured TOS value that is used in the outer
          header during packet encapsulation. When this leaf is not set, the TOS