The jurisdiction of the commissione extends over a province; each province of Sicily has a commissione with the exception of Messina and Siracusa. Beyond the provincial level details become vague. For quite some time there was no coordination among the provincial cartels. Tommaso Buscetta claims, however, that a commissione interprovinciale was tentatively set up toward the end of the 1970s, composed of all rappresentanti di provincia, and that although Palermo was by far the dominant force, each province had the same formal standing: "This mechanism made it possible to create alliances, or in any case to reach agreements on business of common interest" (TB: I, 21; see also III, 13; AC: I, 39-41). He said little as to whether this supercartel ever worked, and to what particular end, except to remark that "if the entrepreneur of a province wanted to do some work in another province, permission depended on the decision of the interprovinciale" (TB: III, 12-13). Several other sources confirm that whenever an entrepreneur had business in another family's territory, he had to seek permission through his own family if he was a member of one, or from the boss acting as his protector if he was not (OSAG Arnone: 145-146, 155-156, 170-171, 180-181; I-3, I-4).

Diego Gambetta, The Sicilian Mafia The Busi…, loc. 288