California Codes, Code of Civil Procedure - CCP, Part 2 — Of Civil Actions, Title 14 — Of Miscellaneous Provisions, Chapter 1 — Proceedings Against Joint Debtors, Section 993
If the defendant, in his answer, denies the judgment, or sets up any defense which may have arisen subsequently, the summons, with the affidavit annexed, and the answer, constitute the written allegations in the case; if he denies his liability on the obligation upon which the judgment was recovered, a copy of the original complaint and judgment, the summons, with the affidavit annexed, and the answer, constitute such written allegations, subject to the right of the parties to amend their pleadings as in other cases.
Notes
Defines the written allegations for proceedings on the specified postjudgment summons. If the defendant denies the judgment or raises a later defense, they consist of the summons, attached affidavit, and answer; if the defendant denies underlying liability, they also include the original complaint and judgment, subject to ordinary pleading amendments.
Use as reference
Lexinter.net | California Code, Code of Civil Procedure - CCP § 993 | https://laws.lexinter.net/codes/california/code-of-civil-procedure/part-2/title-14/chapter-1/section-993