diff --git a/sensorhub-service-consys/src/main/java/org/sensorhub/impl/service/consys/ServiceErrors.java b/sensorhub-service-consys/src/main/java/org/sensorhub/impl/service/consys/ServiceErrors.java
index 14b53ef87..3150bba63 100644
--- a/sensorhub-service-consys/src/main/java/org/sensorhub/impl/service/consys/ServiceErrors.java
+++ b/sensorhub-service-consys/src/main/java/org/sensorhub/impl/service/consys/ServiceErrors.java
@@ -42,7 +42,13 @@ public static InvalidRequestException badRequest(String msg)
     
     public static InvalidRequestException invalidPayload(String msg)
     {
-        return new InvalidRequestException(ErrorCode.BAD_PAYLOAD, msg);
+        return invalidPayload(msg, null);
+    }
+    
+    
+    public static InvalidRequestException invalidPayload(String msg, Throwable cause)
+    {
+        return new InvalidRequestException(ErrorCode.BAD_PAYLOAD, msg, cause);
     }
     
     
diff --git a/sensorhub-service-consys/src/main/java/org/sensorhub/impl/service/consys/resource/BaseResourceHandler.java b/sensorhub-service-consys/src/main/java/org/sensorhub/impl/service/consys/resource/BaseResourceHandler.java
index 93fa8048d..39e61c0aa 100644
--- a/sensorhub-service-consys/src/main/java/org/sensorhub/impl/service/consys/resource/BaseResourceHandler.java
+++ b/sensorhub-service-consys/src/main/java/org/sensorhub/impl/service/consys/resource/BaseResourceHandler.java
@@ -355,7 +355,7 @@ protected void create(final RequestContext ctx) throws IOException
         }
         catch (ResourceParseException e)
         {
-            throw ServiceErrors.invalidPayload("Invalid payload: " + e.getMessage());
+            throw ServiceErrors.invalidPayload("Invalid payload: " + e.getMessage(), e);
         }
     }
     
@@ -399,7 +399,7 @@ protected void update(final RequestContext ctx, final String id) throws IOExcept
         }
         catch (ResourceParseException e)
         {
-            throw ServiceErrors.invalidPayload("Invalid payload: " + e.getMessage());
+            throw ServiceErrors.invalidPayload("Invalid payload: " + e.getMessage(), e);
         }
         
         // update in datastore