LOG.info("Create Containers succeeded!: ");
 
         } catch (InterruptedException | ExecutionException e) {
-            LOG.error("Create Containers Failed: " + e);
-            e.printStackTrace();
+            LOG.error("Create Containers Failed: ", e);
         }
         } else {
             LOG.warn("createContainers : cannot find dataBroker to create containers");
 
                                try {
                                        consumerClass = Class.forName(consumerClassName);
                                } catch (Exception e) {
-                                       LOG.error("Could not find DMaap consumer class " + consumerClassName);
+                                       LOG.error("Could not find DMaap consumer class {}", consumerClassName, e);
                                }
 
                                if (consumerClass != null) {
 
                                LOG.info("POST message body would be:\n"+rpcMsgbody);
                        }
                } catch (Exception e) {
-
+                       LOG.error("Unable to process message", e);
                }
 
        }
 
                        try {
                                this.pass = Integer.parseInt(pass);
                        } catch (Exception e) {
-                               LOG.error("Invalid pass value for artifact map entry ("+tag+","+rpc+","+pass+")");
+                               LOG.error("Invalid pass value for artifact map entry ({} {} {})", tag, rpc, pass, e);
                        }
                }
        }
 
                        try {
                                pollingInterval = Integer.parseInt(curval);
                        } catch (Exception e) {
-                               LOG.warn("Illegal value for org.onap.ccsdk.sli.northbound.uebclient.polling-interval ("+curval+")");
+                               LOG.warn("Illegal value for org.onap.ccsdk.sli.northbound.uebclient.polling-interval ({}) ", curval, e);
                        }
                }
 
                        try {
                                pollingTimeout = Integer.parseInt(curval);
                        } catch (Exception e) {
-                               LOG.warn("Illegal value for org.onap.ccsdk.sli.northbound.uebclient.polling-timeout ("+curval+")");
+                               LOG.warn("Illegal value for org.onap.ccsdk.sli.northbound.uebclient.polling-timeout ({}) ", curval, e);
                        }
                }