What this means
People should know which answers are required before submitting. The requirement must be visible and available to reading software. The form's behavior should agree with its labels.
Passing examples
- A label says 'Email address (required)', and reading software also identifies the field as required.
- Explained asterisks mark required fields, and the fields' required settings agree.
- An optional phone field is labeled optional and can be left empty.
Failing examples
- The email field is not marked required until submission fails.
- Red coloring is the only indication that a field is required.
- A field says 'optional' but prevents submission when left empty.