This means the URL is too long. There's a web standard limitation that we have no control over. The URL should be less than 2048 characters.

💡Tip

If your form is meant to update an existing record, then you should send a miniExtensions form editing URL instead. The main feature of our form is that it allows you to edit existing records. It generates a unique ‘editing URL’ for every record in your table. This article guides you step-by-step on how to set this up.

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