3337200 - How do I resolve Error: "java.lang.NullPointerException: Cannot store a null value for a Parameter" when setting up Docusign account?

Error: Caused by: java.lang.NullPointerException: Cannot store a null value for a Parameter
    at ariba.util.parameters.Parameters.setParameter(Parameters.java:833)
    at ariba.base.server.BaseServiceServerImpl.setParameterInternal(BaseServiceServerImpl.java:1894)
    at ariba.base.core.BaseServiceImpl.setParameter(BaseServiceImpl.java:672)
    at ariba.collaborate.util.Parameters.saveSignatureParameter(Parameters.java:3803)
    at ariba.collaborate.core.signature.ESignHelper.saveParameter(ESignHelper.java:295)
    at ariba.collaborate.core.signature.docusign.rest.DocuSignRESTParameters.saveData(DocuSignRESTParameters.java:132)
    at ariba.collaborate.adminui.SignatureProviderConfigPage.saveSignatureProviderParameters(SignatureProviderConfigPage.java:595)
    at ariba.collaborate.adminui.SignatureProviderConfigPage.okAction(SignatureProviderConfigPage.java:337)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at ariba.util.fieldvalue.ReflectionMethodGetter.invokeGetMethod(ReflectionMethodGetter.java:106)
    at ariba.util.fieldvalue.ReflectionMethodGetter.getValue(ReflectionMethodGetter.java:121)
    at ariba.util.fieldvalue.FieldValue_Object.getFieldValuePrimitive(FieldValue_Object.java:164)
    at ariba.util.fieldvalue.FieldValue_Object.getFieldValue(FieldValue_Object.java:206)
    at ariba.util.fieldvalue.FieldPath.getFieldValue(FieldPath.java:238)
    at ariba.ui.aribaweb.core.AWParentKeyPathBinding.value(AWBinding.java:406)

KBA , BNS-ARI-SC-SI , Signature Integration , Problem