Iowa Code § 625.25: Opportunity to pay.

No such attorney fee shall be taxed if the defendant is a resident of the county and the action is not aided by an attachment, unless it shall be made to appear that such defendant had information of and a reasonable opportunity to pay the debt before action was brought. This provision, however, shall not apply to contracts made payable by their terms at a particular place, the maker of which has not tendered the sum due at the place named in the contract.