Message Start Node - Not able to create process instance

Hi All,
Here is the issue that I am facing. I have a sample process definition with 3 nodes. Start node (Message), script node that does some console printing and end not. While trying instantiate this process from Business central I am getting the following error. Please help

Unable to complete your request. The following exception occurred: "Unable to create response: There is no start node that matches the trigger none".