California Code, Probate Code - PROB § 13658

If the court determines that all or a part of the property passing to the surviving spouse consists of an unincorporated business or an interest in an unincorporated business which the deceased spouse was operating or managing at the time of death, the court shall require the surviving spouse to file a list of all of the known creditors of the business and the amounts owing to each of them. The court may issue any order necessary to protect the interests of the creditors of the business, including, but not limited to, the filing of (1) an undertaking and (2) an inventory and appraisal in the form provided in Section 8802 and made as provided in Part 3 (commencing with Section 8800) of Division 7.