The IRR Inventory data for a tribe is updated on an annual basis as follows:
(a) Each BIA Regional Office provides the tribes in its region copies of the IRR Inventory by November 1st of each year;
(b) The tribe reviews the data and submits changes (together with a strip map of each change) to the BIA Regional Office along with authorizing resolutions or similar official authorization by March 15;
(c) The BIA Regional Office reviews each tribe's submission for errors or omissions and provides the tribe with its revised inventory by May 15;
(d) The tribe must correct any errors or omissions by June 15;
(e) Each BIA Regional Office certifies its data and enters the data into the IRR Inventory by July 15;
(f) BIA provides each tribe with copies of the Relative Need Distribution Factor distribution percentages by August 15; and
(g) BIADOT approves submissions from BIA Regional Offices before they are included in the National IRR Inventory.