Iowa Code § 554.2202
Terms with respect to which the confirmatory memoranda of the parties agree or which are otherwise set forth in a writing intended by the parties as a final expression of their agreement with respect to such terms as are included therein may not be contradicted by evidence of any prior agreement or of a contemporaneous oral agreement but may be explained or supplemented
[C66, 71, 73, 75, 77, 79, 81, §554.2202] 2007 Acts, ch 41, §24
Referred to in §554.2316, §554.2326, §715B.2