Okla. Stat. tit. 19, § 883

No suit shall be sustained to set aside any assessment made or special assessment bond for which any assessment is security, unless brought within thirty (30) days from the time such assessment is made; provided, that in the event any special assessment shall be set aside or be invalid, in whole or in part, the board of directors may, at any time, in the manner herein provided for levying an original assessment, proceed to cause a new assessment to be made, which shall have the like force and effect as an original assessment.