California Code, Streets and Highways Code - SHC § 35534

If, in any suit to set aside the lien of any assessment or of any bond representing any assessment, or in any suit to quiet title against the lien of any such assessment or bond, or in any suit to enjoin the making, filing, confirmation, or issuance of any assessment or bond to pay for the cost and expenses of any acquisition and improvement pursuant to this part, a court of competent jurisdiction in its judgment decrees such assessments or bonds to be void or unenforceable or enjoins the making, filing, issuance, or confirmation of any such assessment or bond, the court in and by its decree shall direct the making of a reassessment to cover the assessments involved in the suit.