A court may modify orders related to conservatorship, support, or possession of and access to a child.  Modification of child-related provisions in prior court orders is conditioned on the requested change being in the best interest of the child.   

A court may not amend, modify, alter, or change the division of property in a final divorce decree.

In some instances a court may modify and reduce court-ordered spousal maintenance. A court may not modify contractual alimony unless the contract specifically permits future modifications by the court.  Usually, the parties can mutually agree to modify their contractual alimony provisions as long as new agreements are in writing and signed by both parties.