KPA Flex has a setting that allows you to restrict your form attachments to specific file types.
This setting can be used to guide users into attaching a specific form type or to achieve specific data security goals, such as not allowing .pdfs to be uploaded.
Restricting attachment file types on a new form
Begin by creating a new form. You will see a row titled “Allowed File Types.” In this row, you may add the allowable file types. Make sure to include a comma between file types, i.e. “.pdf, .docx, .xslx”.
Fill out the rest of the form and select the “Save” button at the bottom of the page. The same can be done for existing forms. If you wish to add file type restrictions to attachments on an existing form, simply edit an existing form and navigate to that same field. Here is a video that will walk you through how to restrict file types on form attachments: How to Video