These are relevant references from the Books where Petition is mentioned.
I make no pronouncements on these matters, but report them as I find them.
Arrive at your own conclusions.
I wish you well,
From my sea bag I handed Turgus a letter. "In this letter," I said, "I have inscribed a petition that you be pardoned for your offenses in Port Kar. It is addressed to the council of captains, that body sovereign in Port Kar, of which I am a member. With this letter you may, if you wish, return to the city. It is my expectation that the council will rule favorably on the pardon. If they do not you will, at least, have ten days in which to take you departure from the city."
Explorers of Gor Book 13 Page 462
"Many minor petitions are granted," he said, "and some of the major ones. To be sure, it depends wholly, at least in the major cases, upon the justice of the petition."
Mercenaries of Gor Book 21 Page 266