Section 417.30.

Cal. Code of Civil Procedure - CCP § 417.30.
in effect
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After a summons has been served on a person, proof of service of the summons as provided in Section 417.10 or 417.20 shall be filed, unless the defendant has previously made a general appearance.
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026

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