What this test checks
This test checks whether all form fields in a PDF document are correctly referenced in the root form element and are grouped in a logical structure. This test is applicable only if the PDF document contain an interactive form.
Why this maybe a barrier
The root element of a form in a PDF document is its AcroForm dictionary. This object is stored in the document catalog. All form elements need to be referenced in this root element for the form to have a consistent and logical structure.
Incorrect form structure prevents predictable navigation and interpretation by assistive technologies. Users may not be able to complete forms accurately if the fields are not organized properly in the root form element in a consistent logical structure.
WCAG 2.2 Success Criterion
1.3.1 Info and Relationships (Level A) — "Information, structure, and relationships conveyed through presentation can be programmatically determined or are available in text. (Level A)"
For more information, visit WCAG 2.2 Success Criteria 1.3.1, under the guideline Adaptable.
PDF/UA Principle
N.A (WCAG-only check)