There is provided a method comprising receiving at least one request from a first function instance of a self-organising network, comparing said first function instance and a second function instance effective in the self-organising network to determine whether the first function instance and the second function instance overlap, and, characterised by, receiving operational stage information of the first function instance and if the first function instance and the second function instance overlap using said operational stage information in determining which of the first and second function instance to nm in dependence on which of the first function instance and the second function instance has higher priority and causing the determined instance to be run.