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The same name fields will be categorized in the data tab of the form submission like this:

Signature controls are excluded from Saved and Key Field lists.

Error Page

If you supply a Url in this property field,  will display this page whenever it fails to load a default document from one of the form's Document URI Read methods and also when it fails on a document URI Write method. If this field is not set a default error page will be displayed.

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