The following NPE occurs on processing the SO reponse :

java.lang.NullPointerException: null
{{ at org.onap.nbi.apis.serviceorder.workflow.SOTaskProcessor.updateServiceOrderItem(SOTaskProcessor.java:296) ~[classes!/:1.0.0-SNAPSHOT]}}
{{ at org.onap.nbi.apis.serviceorder.workflow.SOTaskProcessor.processOrderItem(SOTaskProcessor.java:92) ~[classes!/:1.0.0-SNAPSHOT]}}
{{ at org.onap.nbi.apis.serviceorder.workflow.SOTaskManager.processExecutionPlan(SOTaskManager.java:91) ~[classes!/:1.0.0-SNAPSHOT]}}
{{ at sun.reflect.GeneratedMethodAccessor69.invoke(Unknown Source) ~[na:na]}}
{{ at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_121]}}
{{ at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_121]}}
{{ at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65) ~[spring-context-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]}}
{{ at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) ~[spring-context-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]}}
{{ at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_121]}}
{{ at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_121]}}
{{ at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_121]}}
{{ at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [na:1.8.0_121]}}
{{ at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_121]}}
{{ at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_121]}}
{{ at java.lang.Thread.run(Thread.java:745) }}

This is due to NBI expecting requestReference instead of requestReferences in the SO response :

{"requestReferences":{"instanceId":"b45c768d-19cc-4859-bb43-8fb74b38de2a","requestId":"2f9cfd36-1f7d-4ed3-b685-7d8272ae3621"}}

The file below  needs to be changed (and renamed) :

src/main/java/org/onap/nbi/apis/serviceorder/model/consumer/RequestReferences.java

 ** < public class RequestReferences {

—

> public class RequestReference {

27c43

<         return "RequestReferences{" + "instanceId='" + instanceId + '\'' + ", requestId='" + requestId + '\'' + '}';

—

>         return "RequestReference{" + "instanceId='" + instanceId + '\'' + ", requestId='" + requestId + '\'' + '}';

And this file:

src/main/java/org/onap/nbi/apis/serviceorder/model/consumer/CreateServiceInstanceResponse.java 

<     public RequestReferences getRequestReferences() {

<         return requestReferences;

—

>     public RequestReference getRequestReference() {

>         return requestReference;

9,10c25,26

<     public void setRequestReferences(RequestReferences requestReferences) {

<         this.requestReferences = requestReferences;

—

>     public void setRequestReference(RequestReference requestReference) {

>         this.requestReference = requestReference;

13c29

<     private RequestReferences requestReferences;

—

>     private RequestReference requestReference;

 ** 

And this file:

src/main/java/org/onap/nbi/apis/serviceorder/workflow/SOTaskProcessor.java

<                     || response.getBody().getRequestReferences() == null) {

—

>                     || response.getBody().getRequestReference() == null) {

 

<             orderItem.getService().setId(createServiceInstanceResponse.getRequestReferences().getInstanceId());

<             orderItem.setRequestId(createServiceInstanceResponse.getRequestReferences().getRequestId());

—

>             orderItem.getService().setId(createServiceInstanceResponse.getRequestReference().getInstanceId());

>             orderItem.setRequestId(createServiceInstanceResponse.getRequestReference().getRequestId());