Creating an Application Connection
You must explicitly register an application connection (also called the registration ID) with mobile platform.
You can specify customized application properties for client requests. Provide the application connection ID, X-SMP-APPCID, using an explicit request header or a cookie. If the connection ID is missing, mobile platform generates a universally unique ID (UUID), which is communicated to the device through the response header and cookie X-SMP-APPCID.