start has not been called / the call to start was unsuccessful / the application was switched to another project's data source in the console (Data Source Management) without calling start again
CODE_VALID
-3
Parameter verification failed
CODE_ENABLE
-4
The project has been disabled
CODE_REGISTRATIONID
-5
The push registration was not successful
CODE_SWITCH
-6
The application has been switched to another project's data source, and start needs to be called again
