If the apportionment methods included in §§ 10-43-22.1 to 10-43-25.9, inclusive, do not fairly represent the financial institution's net income in this state, the financial institution may petition for, or the secretary may require with respect to all or any part of the taxpayer's business activity:
The secretary shall promulgate rules pursuant to chapter 1-26 within six months of any decision to use any of the alternative apportionment methods provided under this section.
SDCL 10-43-29.1