Oregon Revised Statutes Revenue and Taxation § 314.412

(1) The replacement of the converted property which the taxpayer claims results in nonrecognition of any part of such gains; or

(2) The taxpayer's intention not to replace such property; or

(3) A failure of the taxpayer to replace the property within the period prescribed in the federal Internal Revenue Code which applies to the Personal Income Tax Act of 1969, in the corporation excise tax laws or in the corporation income tax laws, whichever is applicable.