S.C. Code Ann. § 63-15-368
(A) Unless the court issues a temporary emergency order pursuant to Section 63-15-336, upon a finding that a petitioner is entitled to immediate physical custody of the child, the court shall order that the petitioner may take immediate physical custody of the child unless the respondent establishes that:
(1) the child custody determination has not been registered and confirmed under Section 63-15-358 and that: