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- Test your form and enable the developer tool. This tool is a great way to find hidden controls which are invalid or required and empty. You can access it by right clicking on a page and selecting Inspect, or by using the keyboard shortcuts indicated for your OS/Browser. The following links point to documentation on developer tools for several supported browsers.
- Open the developer tool's HTML tab and search for all instances of s-invalid using the search box in the tool's top-right corner. This will take you to the HTML of each control in the invalid state. The control's name can be found in that HTML, indicated by cname.
- Now you can edit your form in the designer, find that control and fix the issue.
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