diff --git a/v3_22_0/CDT-responsePrimitive-v3_22_0.xsd b/v3_22_0/CDT-responsePrimitive-v3_22_0.xsd
index 5a40fd768b1d4baf511736ef487d0a4194424048..b4b25845d4095f3140242e53da01319d3aa25d8e 100644
--- a/v3_22_0/CDT-responsePrimitive-v3_22_0.xsd
+++ b/v3_22_0/CDT-responsePrimitive-v3_22_0.xsd
@@ -163,7 +163,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
   
   <xs:complexType name="listOfChildResourceRef">    
     <xs:sequence>  
-      <xs:element name="resourceRef" type="m2m:childResourceRef" minOccurs="1" maxOccurs="unbounded" />
+      <xs:element name="resourceRef" type="m2m:childResourceRef" minOccurs="0" maxOccurs="unbounded" />
     </xs:sequence> 	       
   </xs:complexType>