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SUM-200(A)Mandatory

Additional Parties Attachment (Attachment to Summons)

California · Judicial Council of California · Effective January 1, 2007

This form is an attachment that gives extra space to list all the people involved in a lawsuit when the main summons form does not have enough room. It is used to list additional parties who are part of the case.

The court describes it as: Gives more space to list parties on a summons. This can be attached to Summons (SUM-100) or any other summons form.

Open the official PDFfrom Judicial Council of California

Where this fits in a case

Start a case

Stage: Start a case

This form is used when a summons needs to list more parties than the main summons form allows space for.

Either party may file.

Common questions

What is this form for?
This form is an attachment to a summons that provides more space to list all the parties involved in a case.
How do I use this form?
It can be attached to any summons if there is not enough space to list all the parties on the main summons form.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect January 1, 2007.

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