A Tribe or Tribal organization must include in its Tribal IV-D plan the provisions governing the location of custodial and noncustodial parents and their assets set forth in this section.

(a) The Tribal IV-D agency must attempt to locate custodial or noncustodial parents or sources of income and/or assets when location is required to take necessary action in a case; and

(b) The Tribal IV-D agency must use all sources of information and records reasonably available to the Tribe or Tribal organization to locate custodial or noncustodial parents and their sources of income and assets.