Files required for each application must be in the same region where the application is created.

Cross region scenario isn't supported.

Details: Applications must be created in the same region as the Object Store bucket that contains all related files, jars and configurations required for a successful run of the application. Cross region scenario isn't supported.
Workaround: We're aware of this issue. No workaround is available, other than to ensure that all files, jars, configuration, and so on are in the same region.