diff --git a/Authorize.NET/Api/Controllers/Bases/ApiOperationBase.cs b/Authorize.NET/Api/Controllers/Bases/ApiOperationBase.cs
index c0c46e76..bfc36b3f 100644
--- a/Authorize.NET/Api/Controllers/Bases/ApiOperationBase.cs
+++ b/Authorize.NET/Api/Controllers/Bases/ApiOperationBase.cs
@@ -61,6 +61,8 @@ protected void SetApiRequest(TQ apiRequest) {
 		    _apiRequest = apiRequest;
 	    }
 
+        public Guid RequestId { set; get; }
+
 	    public TS GetApiResponse() {
 		    return _apiResponse;
 	    }
@@ -88,13 +90,18 @@ public TS ExecuteWithApiResponse(AuthorizeNet.Environment environment = null)
         public void Execute(AuthorizeNet.Environment environment = null)
         {
             BeforeExecute();
+            
+            if ( Guid.Empty == this.RequestId)
+            {
+                this.RequestId = Guid.NewGuid();
+            }
 
             //Logger.debug(string.Format(CultureInfo.InvariantCulture, "Executing Request:'{0}'", XmlUtility.GetXml(GetApiRequest())));
 
             if (null == environment) { environment = ApiOperationBase<ANetApiRequest, ANetApiResponse>.RunEnvironment; }
             if (null == environment) throw new ArgumentException(NullEnvironmentErrorMessage);
 
-            var httpApiResponse = HttpUtility.PostData<TQ, TS>(environment, GetApiRequest());
+            var httpApiResponse = HttpUtility.PostData<TQ, TS>(environment, GetApiRequest(), this.RequestId);
 
             if (null != httpApiResponse)
 		    {
@@ -190,7 +197,7 @@ private void Validate() {
 	        var impersonationAuthenticationType = merchantAuthenticationType.impersonationAuthentication;
 		    if ( null != impersonationAuthenticationType) throw new IllegalArgumentException("ImpersonationAuthenticationType needs to be null");
             */
-            //	    impersonationAuthenticationType.setPartnerLoginId(CnpApiLoginIdKey);
+    //	    impersonationAuthenticationType.setPartnerLoginId(CnpApiLoginIdKey);
     //	    impersonationAuthenticationType.setPartnerTransactionKey(CnpTransactionKey);
     //	    merchantAuthenticationType.setImpersonationAuthentication(impersonationAuthenticationType);
 
diff --git a/Authorize.NET/Util/Constants.cs b/Authorize.NET/Util/Constants.cs
index 0daf447e..3dd5eb17 100644
--- a/Authorize.NET/Util/Constants.cs
+++ b/Authorize.NET/Util/Constants.cs
@@ -28,6 +28,7 @@ public static class Constants {
 
         public const string SDKVersion = "1.9.4";
 
+        public static readonly string DCDRequestIdHeaderName = "x-DCD-RequestId";
     }
 #pragma warning restore 1591
 }
diff --git a/Authorize.NET/Util/HttpUtility.cs b/Authorize.NET/Util/HttpUtility.cs
index a3673de5..70618ecc 100644
--- a/Authorize.NET/Util/HttpUtility.cs
+++ b/Authorize.NET/Util/HttpUtility.cs
@@ -29,7 +29,7 @@ private static Uri GetPostUrl(AuthorizeNet.Environment env)
 		    return postUrl;
 	    }
 
-        public static ANetApiResponse PostData<TQ, TS>(AuthorizeNet.Environment env, TQ request) 
+        public static ANetApiResponse PostData<TQ, TS>(AuthorizeNet.Environment env, TQ request, Guid requestId) 
             where TQ : ANetApiRequest 
             where TS : ANetApiResponse
         {
@@ -48,6 +48,10 @@ public static ANetApiResponse PostData<TQ, TS>(AuthorizeNet.Environment env, TQ
             webRequest.KeepAlive = true;
             webRequest.Proxy = SetProxyIfRequested(webRequest.Proxy);
 
+            //add corelationId
+            webRequest.Headers[Constants.DCDRequestIdHeaderName] = requestId.ToString();
+            Logger.info( string.Format("Co-relationId for the web-request: {0} ", requestId));
+
             //set the http connection timeout 
             var httpConnectionTimeout = AuthorizeNet.Environment.getIntProperty(Constants.HttpConnectionTimeout);
             webRequest.Timeout = (httpConnectionTimeout != 0 ? httpConnectionTimeout : Constants.HttpConnectionDefaultTimeout);
diff --git a/AuthorizeNETtest/Api/Controllers/SampleTest/ArbSubscriptionSampleTest.cs b/AuthorizeNETtest/Api/Controllers/SampleTest/ArbSubscriptionSampleTest.cs
index 9673e9d7..0bc74fa2 100644
--- a/AuthorizeNETtest/Api/Controllers/SampleTest/ArbSubscriptionSampleTest.cs
+++ b/AuthorizeNETtest/Api/Controllers/SampleTest/ArbSubscriptionSampleTest.cs
@@ -49,6 +49,8 @@ public void SampleCodeGetSubscriptionList()
             };
 
             var createController = new ARBCreateSubscriptionController(createRequest);
+            createController.RequestId = Guid.NewGuid();
+
             createController.Execute();
             var createResponse = createController.GetApiResponse();
             Assert.IsNotNull(createResponse.subscriptionId);
diff --git a/AuthorizeNETtest/CardPresentGatewayTest.cs b/AuthorizeNETtest/CardPresentGatewayTest.cs
index ef3bf606..7c7fd049 100644
--- a/AuthorizeNETtest/CardPresentGatewayTest.cs
+++ b/AuthorizeNETtest/CardPresentGatewayTest.cs
@@ -162,7 +162,7 @@ private string SendAuthOnly(decimal amount, bool returnTransID)
 
             CardPresentGateway target = new CardPresentGateway(ApiLogin, TransactionKey, true);
 
-            IGatewayRequest request = new CardPresentAuthorizationRequest(amount, "4111111111111111", "02", "20");
+            IGatewayRequest request = new CardPresentAuthorizationRequest(amount, "4111111111111111", "02", "24");
             string description = "CP Auth transaction approved testing";
 
             IGatewayResponse response = target.Send(request, description);