ORS § 131.035 : PROCEDURE IN CRIMINAL MATTERS GENERALLY — PRELIMINARY PROVISIONS; LIMITATIONS; JURISDICTION; VENUE; CRIMINAL FORFEITURE; CRIME PREVENTION —PRELIMINARY PROVISIONS — When departures, errors or mistakes in pleadings or proceedings are material

No departure from the form or mode prescribed by law, error or mistake in any criminal pleading, action or proceeding renders it invalid, unless it has prejudiced the defendant in respect to a substantial right.

ORS 131.035

1973 c.836 §4