Cal. Probate Code § 9250

(a) When a claim is filed, the personal representative shall allow or reject the claim in whole or in part. (b) The allowance or rejection shall be in writing. The personal representative shall file the allowance or rejection with the court clerk and give notice to the creditor as provided in Part 2 (commencing with Section 1200) of Division 3, together with a copy of the allowance or rejection. (c) The allowance or rejection shall contain the following information: (1) The name of the creditor. (2) The total amount of the claim. (3) The date of issuance of letters. (4) The date of the decedent’s death. (5) The estimated value of the decedent’s estate. (6) The amount allowed or rejected by the personal representative. (7) Whether the personal representative is authorized to act under the Independent Administration of Estates Act (Part 6 (commencing with Section 10400)). (8) A statement that the creditor has 90 days in which to act on a rejected claim. (d) The Judicial Council may prescribe an allowance or rejection form, which may be part of the claim form. Use of a form prescribed by the Judicial Council is deemed to satisfy the requirements of this section. (e) This section does not apply to a demand the personal representative elects to treat as a claim under Section 9154.