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Jason Harris 45Jason Harris 45 

How to update an existing case via web to case?

I have been trying to determine if a flow or trigger could help me wuth updating an existing case via web to case.  I have created a text field for adding an existing case number in my web to case page.  Is this possible?
ShirishaShirisha (Salesforce Developers) 

Hi Jason,

Greetings!

I don't think is possible to pull the existing case record to update via Web to Case form.But,you might need to develop the PHP page to pull the existing case and make update the page in next page.

Please refer the below thread for the same:
https://developer.salesforce.com/forums/?id=906F00000008kV7IAI

Kindly mark it as best answer if it helps so that it can help others in the future.

Warm Regards,
Shirisha Pathuri