25 C.F.R. § 16.4
To the extent that information may be useful in discharging the duties covered by the regulations in this part, the Bureau shall furnish to the Field Solicitor, either on a current basis or at periodic intervals, processes and notices received concerning court cases and information, as current and complete as may reasonably be obtainable, concerning the estate and status of an Indian of the Five Civilized Tribes for whom legal assistance should be rendered pursuant to the regulations in this part. Similarly, to the extent that such information may be useful for Bureau action or records, the Field Solicitor shall advise the Bureau of court proceedings, information received, and action taken in furnishing legal services pursuant to the regulations in this part.
25 C.F.R. § 16.4