EN16931 / XRechnung / Peppol BIS 3 Validator

PDF/UA-1 rule reference › clause 7.18.3

PDF/UA-1 rule 7.18.3-1: A page with annotation(s) contains Tabs key with value … instead of S

Fixed by the automatic fix page

What veraPDF reports

A page with annotation(s) contains Tabs key with value %1 instead of S

veraPDF rule 7.18.3-1 = ISO 14289-1:2014 clause 7.18.3, test 1, checked on PDF object PDPage.

In Adobe Acrobat’s Accessibility Checker the closest item is “Tab order”.

What the requirement says

Every page on which there is an annotation shall contain in its page dictionary the key Tabs, and its value shall be S

Can it be fixed automatically?

Fixed by the automatic fix. Our automatic fix removed this failure in every test file where veraPDF reported it (measured 2026-10-24 with veraPDF 1.28.2). Run the free check to see the before/after result for your own file before paying.

How to fix it by hand

Set the tab order of every page that has links or form fields to follow the document structure (Acrobat: page thumbnails › Page Properties › Tab Order › Use Document Structure).

Check your PDF now (free)

Upload the PDF: veraPDF lists every failed PDF/UA-1 rule, our fix runs, and veraPDF checks the fixed file again — you see “N failed rules before → M after” before deciding. The fixed file costs 19 € (excl. VAT); the check is free. We never call a file “accessible” or “compliant”.

Rule text (description and error message): veraPDF validation profile PDF/UA-1 © veraPDF Consortium, licensed under CC BY 4.0. This site is not affiliated with the veraPDF Consortium, the PDF Association, ISO or Adobe. Adobe and Acrobat are trademarks of Adobe; the Acrobat checker item is named only to help you match the two reports.