A tribunal of this State may enforce a child-support order of another state registered for purposes of modification, in the same manner as if the order had been issued by a tribunal of this State, but the registered support order may be modified only if the requirements of Section 63-17-3830 or 63-17-3850 have been met.
Prerequisites to modification
S.C. Code Ann. § 63-17-3820, under Title 63, Chapter 17.
S.C. Code Ann. § 63-17-3820