California Code, Revenue and Taxation Code - RTC § 40215

(a) At least 30 days prior to the filing or recording of liens under Chapter 14 (commencing with Section 7150) or Chapter 14.5 (commencing with Section 7220) of Division 7 of Title 1 of the Government Code, the department shall mail to the taxpayer a preliminary notice. The notice shall specify the statutory authority of the department for filing or recording the lien, indicate the earliest date on which the lien may be filed or recorded, and state the remedies available to the taxpayer to prevent the filing or recording of the lien. In the event tax liens are filed for the same liability in multiple counties, only one preliminary notice shall be sent.

(b) If the department determines that filing a lien was in error, it shall mail a release to the taxpayer and the entity recording the lien as soon as possible, but no later than seven days, after this determination and receipt of lien recording information. The release shall contain a statement that the lien was filed in error. In the event the erroneous lien is obstructing a lawful transaction, the department shall immediately issue a release of lien to the taxpayer and the entity recording the lien.

(c) When the department releases a lien erroneously filed, notice of that fact shall be mailed to the taxpayer and, upon the request of the taxpayer, a copy of the release shall be mailed to the major credit reporting companies in the county where the lien was filed.