
The corporations allowed to operate in the sector could purchase entire regions of space. The Corporate Sector originally consisted of a few hundred star systems, all of which were devoid of intelligent life. The Sicemonite Sector replaces the canon Kastolar sector and Trax sector on the galactic map.The Corporate Sector was first formed in 490 BBY, in order to resolve differences between Galactic Republic lawmakers and the heads of many of the galaxy's largest corporations. This was supposed to flesh out the Emperor's arrogance (which pushes away Mason) and to create something unique for this sector.

The Sicemonite Sector is capitalized in-universe because of the deliberately portrayed arrogance of the Sicemonite Emperor and father of Mason Quarrell. Their lobbying was successful, and the name was change from Sicemonite sector, to Sicemonite Sector. The Emperor felt that the Sicemonite region was "exceptional and should not conform the to the Republic's insistence on uniformity." They also cited the 490 BBY petition by the Corporate Sector as a precedent to their cause. Sicemonite Sector officially changed its name in 66 BBY to incorporate an uppercase spelling of sector, despite rules by the Republic to the contrary. In 66 BBY the sector had its name changed.

The Sicemonite Sector was located near Boz Pity, Kashyyyk and Lannik.

It bordered the Halla sector, Hutt Space and the Mytaranor sector. It bordered the Ootmian Pabol and Trax Tube, which intersected the Bothan Run and Gamor Run hyperspace routes. It also had jurisdiction over a large portion of empty space next to those systems. The Sicemonite Sector was an astro-geographical region that was composed of the Sise System, Rettna, Lexrul, Deysum, Ubrikkia and Uogo'cor.
