Code of Alabama
Part 3 - Registration and Modification of Child-Support Order of Another State.
Section 30-3D-609 - Procedure to Register Child-Support Order of Another State for Modification.

A party or support enforcement agency seeking to modify, or to modify and enforce, a child-support order issued in another state shall register that order in this state in the same manner provided in Sections 30-3D-601 through 30-3D-608 if the order has not been registered. A petition for modification may be filed at the same time as a request for registration, or later. The pleading must specify the grounds for modification.