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If you have not activated the More service sync app, you can follow this user guide Open More Service Sync by tapping on the app name under active apps.
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If it does not have any links configured, you can follow this user guide to set one up.
On the right-hand side you will find a list of objects that are available for sync in More Service.
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In the device list, object types/devices that are configured for sync in More Service appear. To configure object types for sync follow this guide.
To create rules on what is to be synchronized from external providers and to More Service, follow this guide.