Iowa Code § 613.8

Upon the conditions herein provided for the protection of the state, the consent of the state be and it is hereby given, to be made a party in any suit or action which is now pending or which may hereafter be brought in any of the district courts of Iowa, any of the United States district courts within the state or in any other court of or in Iowa having jurisdiction of the subject matter, involving the title to real estate, the partition of real estate, the foreclosure of liens or mortgages against real estate or the determination of the priorities of liens or claims against real estate, for the purpose of obtaining an adjudication touching or pertaining to any mortgage or other lien or claim which the state may have or claim to the real estate involved. The petition in such action shall specifically allege the interest or apparent interest of the state and the specific facts upon which the claim against the state is based and it shall be legally insufficient to allege said claim in general terms.