We set up a SNIRO emulator and configure mso-docker.json inside the mso docker container. When a request is sent to SO, the following error was recorded in BPMN/debugmso.log

2017-10-26T19:02:33.833Z|c85b05d8-ece2-43fa-b3c7-3cb3b737d283|Started ProcessSubflowsBPMNException Method
2017-10-26T19:02:33.833Z|c85b05d8-ece2-43fa-b3c7-3cb3b737d283|Homing Outgoing WorkflowException is: WorkflowException[processKey=Homing,errorCode=2000,errorMessage=mso:adapters:workflow:message:endpoint URN mapping is not set]