1. A method comprising: storing multiple configuration data sets and a plurality of applications in a device, checking access control information for defining a right of an application in the device to access a configuration data set in response to an indication from an application in the device requiring access to a configuration data set, and in response to the application being entitled to access the configuration data set, on the basis of the access control information, arranging access to the configuration data set for the application, wherein at least one service context is stored in the device, the service context comprising at least the configuration data set, and access to the service context is allowed for the application on the basis of the access control information if the application is authorized on the basis of access control information associated with the service context, wherein access control information comprises at least one of information specified by an external entity and information controlled by an external entity.