You can specify the integration server to which to deploy a message flow by using the Deployment Location wizard within the Test Client.
Before you can test your message flow, you must have configured an integration node. The integration node must be running. If you do not have an existing integration node, you can create one using the Deployment Location wizard within the Test Client by selecting New local integration node. Alternatively select Connect to a remote integration node to import a connection to a remote integration node.