De transactionibus axiomata

This condition is that he who remits the lawsuit receives something for that name, whether it is given to him right now or promised.

VI.
These individual points are aptly included in the two parts of a settlement, which are: the agreed remission of a doubtful lawsuit, and the performance of some thing for the remission.

VII.
Every settlement is either simple or fortified by the stipulatio Aquiliana a general Aquilian stipulation that discharges all obligations; both are either special or general. There is also one that is sworn and one that is not sworn; just as there is one that is judicial and one that is extrajudicial; likewise written or unwritten.

VIII.
Indeed, all can settle who can also make a pact, that is, those who can consent and who have free administration of their own things.

IX.
But those to whom the care or function of administering another's property has been committed do not settle correctly except with a certain distinction.

X.
Whence also a procurator agent/proxy, unless he is acting in his own interest, or the free administration of all goods has been permitted to him, or he has been constituted for this with a special mandate, cannot settle.

XI.
Tutors, Curators, and Administrators of cities, although they can settle over a doubtful right, are not permitted to alienate by settling contrary to the prohibition of the law, or to give, or to ambitiously remit a liquidated right.