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The principles of local self-government contained in the present Charter apply to all the categories of local authorities existing within the territory of the Party. However, each Party may, when depositing its instrument of ratification, acceptance or approval, specify the categories of local or regional authorities to which it intends to confine the scope of the Charter or which it intends to exclude from its scope. It may also include further categories of local or regional authorities within the scope of the Charter by subsequent notification to the Secretary General of the Council of Europe.