diff --git a/v1_5_0/CDT-enumerationTypes-v1_5_0.xsd b/v1_5_0/CDT-enumerationTypes-v1_5_0.xsd
index a11af668897099dc3b62e18c63762749f3319b6a..514ccd14edb2580f867263abb8eef1b410795b2d 100644
--- a/v1_5_0/CDT-enumerationTypes-v1_5_0.xsd
+++ b/v1_5_0/CDT-enumerationTypes-v1_5_0.xsd
@@ -257,8 +257,6 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
             <xs:enumeration value="5105" />            
             <!-- ALREADY_EXISTS            -->
             <xs:enumeration value="5106" />
-			<!-- NOT_ACCEPTABLE            -->
-			<xs:enumeration value="5107" />
             <!-- TARGET_NOT_SUBSCRIBABLE   -->
             <xs:enumeration value="5203" />            
             <!-- SUBSCRIPTION_VERIFICATION_INITIATION_FAILED   -->
@@ -266,7 +264,9 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
             <!-- SUBSCRIPTION_HOST_HAS_NO_PRIVILEGE     -->
             <xs:enumeration value="5205" />            
             <!-- NON_BLOCKING_REQUEST_NOT_SUPPORTED     -->
-            <xs:enumeration value="5206" />            
+            <xs:enumeration value="5206" />     
+			<!-- NOT_ACCEPTABLE                         -->
+			<xs:enumeration value="5207" />
             <!-- EXTERNAL_OBJECT_NOT_REACHABLE          -->
             <xs:enumeration value="6003" />              
             <!-- EXTERNAL_OBJECT_NOT_FOUND              -->
diff --git a/v2_3_0/CDT-enumerationTypes-v2_3_0.xsd b/v2_3_0/CDT-enumerationTypes-v2_3_0.xsd
index 9b8aced7e5e834211b3cc387c9e0cb0d532d803d..78dc6878f0baec6b042222ef48ebcffaf3be0176 100644
--- a/v2_3_0/CDT-enumerationTypes-v2_3_0.xsd
+++ b/v2_3_0/CDT-enumerationTypes-v2_3_0.xsd
@@ -257,8 +257,6 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
             <xs:enumeration value="5105" />            
             <!-- ALREADY_EXISTS            -->
             <xs:enumeration value="5106" />    
-			<!-- NOT_ACCEPTABLE            -->
-			<xs:enumeration value="5107" />
             <!-- TARGET_NOT_SUBSCRIBABLE   -->
             <xs:enumeration value="5203" />            
             <!-- SUBSCRIPTION_VERIFICATION_INITIATION_FAILED   -->
@@ -266,7 +264,9 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
             <!-- SUBSCRIPTION_HOST_HAS_NO_PRIVILEGE     -->
             <xs:enumeration value="5205" />            
             <!-- NON_BLOCKING_REQUEST_NOT_SUPPORTED     -->
-            <xs:enumeration value="5206" />            
+            <xs:enumeration value="5206" />        
+			<!-- NOT_ACCEPTABLE                         -->
+			<xs:enumeration value="5207" />
             <!-- EXTERNAL_OBJECT_NOT_REACHABLE          -->
             <xs:enumeration value="6003" />              
             <!-- EXTERNAL_OBJECT_NOT_FOUND              -->