Required fields must be identified both visually and programmatically

In Adobe Acrobat Pro:

1. Access the context menu of the field and select the Properties dialog.
2. If the field is required, check the Required box. This checkbox forces the user to fill in the selected form field. If the user attempts to submit the form while a required field is blank, an error message appears and the empty required form field is highlighted.

In addition to the Required checkbox, mark the required fields in a way that is accessible for all users.

• If all fields in the form are required, consider adding a note in the instructions at the top.
• If only certain fields are required, consider marking them with an asterisk or the word (Required) in parentheses within the visible field label. Include an explanatory note in the form instructions, such as: "All fields with an asterisk are required." Then, for screen reader users, include the word (Required) in the tooltip.

Note: Adobe Acrobat Pro is the most common tool for PDF remediations, but other tools and software are also available and can be used to remediate the PDF.