45 C.F.R. § 410.1601
(a) General requirements for transfers. The care provider facility shall continuously assess unaccompanied children in their care to review whether the children's placements are appropriate. An unaccompanied child shall be placed in the least restrictive setting that is in the best interests of the child, subject to considerations regarding danger to self or the community and runaway risk. Care provider facilities shall follow ORR guidance, including guidance regarding placement considerations, when making transfer recommendations.
(3) Within 48 hours prior to the unaccompanied child's physical transfer, the referring care provider facility shall notify all appropriate interested parties of the transfer, including the child's attorney of record or DOJ Accredited Representative, legal service provider, or child advocate, as applicable. However, such advance notice is not required in unusual and compelling circumstances, such as the following cases in which notices shall be provided within 24 hours following transfer:
(4) The unaccompanied child shall be transferred with the child's possessions and legal papers, including, but not limited to: