Iowa Code § 589.11
If an executor, administrator, trustee, guardian, assignee, receiver, referee, or commissioner, acting in that capacity in this or any state, has conveyed in the trust capacity real estate lying in this state and the conveyance has been of record for more than ten years, in the county where the real estate so conveyed is located and which conveyance purports to sustain the title in the present record owner, the conveyance is not void or insufficient because due and legal notice of all proceedings with reference to the making of the conveyance was not served upon all interested or necessary parties, or that the executor, administrator, trustee, guardian, assignee, receiver, referee, or commissioner is not shown to have been duly authorized by an order of court to make and execute the conveyance, that a bond was not given, or that a report of the sale was not made; or the sale or deed of conveyance was not approved by order of court, or a foreign executor, administrator, trustee, guardian, assignee, receiver, referee, or commissioner was not appointed or qualified in the state of Iowa prior to the making of the conveyance, or the record fails to disclose compliance with any law, and all such conveyances are valid, legal, and binding. Allotments by referees in partition are conveyances within the meaning of this section.
Iowa Code § 589.11
84 Acts, ch 1090, §10; 91 Acts, ch 183, §20