De transactionibus axiomata

XII.
Furthermore, a vassal can settle just as he can act and be sued by reason of his fief, provided that he does not settle fraudulently, but out of probable fear of a lawsuit, sincerely, and in good faith.

XIII.
Finally, a prelate cannot settle to the prejudice of the Church without the consent of the chapter or the authority of the Superior.

XIIII.
All things not exempt from human commerce fall into settlement, concerning which a lawsuit has already arisen or may someday arise: except for those whose settlement nature has excluded or laws have specifically prohibited.

XV.
Therefore, one settles in vain concerning a decided matter Latin: "de iudicato" when no lawsuit remains; although it is permitted to make a pact concerning it for the sake of giving.

XVI.
But if the judgment can still be attacked by some remedy after the matter has been judged, and a lawsuit can still persist, such as if an appeal has intervened, or it could still be appealed, or if it is denied without evident calumny that it was judged, or if it is uncertain whether a sentence was passed or not, or if one doubts the validity of the sentence, or if a restitutio in integrum restoration to original state has been obtained against the sentence or could still be obtained, or finally if an exception is still available to the Defendant after condemnation, in all these cases a settlement concerning the judged matter will be valid.

XVII.
Concerning those controversies which arise from a testament, one can neither settle, nor can the truth be sought otherwise than by having inspected and known the words of the testament.