diff --git a/oadrlib/lib/oadr2b/RegisterReport.cs b/oadrlib/lib/oadr2b/RegisterReport.cs
index 89fe51f..4acdde4 100644
--- a/oadrlib/lib/oadr2b/RegisterReport.cs
+++ b/oadrlib/lib/oadr2b/RegisterReport.cs
@@ -83,6 +83,15 @@ public string createRegisterReport(string requestID, string venID, Dictionary<st
             request.requestID = requestID;
             request.venID = venID;
 
+            // Test case R1_3170_TH_VTN_1 (test-harness for OpenADR certification
+            // as provided by Quality logic) fails if reportRequestID is not set. 
+            // Report request ID is mandatory in OpenADR for any subsquent request 
+            // when sent for same report.
+            if (reportRequestID != null)
+            {
+                request.reportRequestID = reportRequestID;
+            }
+
             request.oadrReport = new oadrReportType[reports.Count];
 
             int index = 0;
diff --git a/oadrlib/lib/oadr2b/ReportWrapper.cs b/oadrlib/lib/oadr2b/ReportWrapper.cs
index c1a4ed3..1cc7bac 100644
--- a/oadrlib/lib/oadr2b/ReportWrapper.cs
+++ b/oadrlib/lib/oadr2b/ReportWrapper.cs
@@ -261,7 +261,9 @@ public oadrReportType generateReport(string reportRequestID)
                 return report;
 
             List<IntervalType> reportIntervals = m_reportIntervals.Values.ToList().OrderBy(o => o.dtstart.datetime).ToList();
-            reportIntervals.Reverse();
+            // Test Case R1_3160_TH_VTN_1: Based on OpenADR specifications, intervals have to be              
+            // in ascending order. Reversing it here converts it into descending order.
+            //reportIntervals.Reverse();
 
             // the dtstart of the report must match the dtstart of the first interval
             report.dtstart = new dtstart();