EN16931 / XRechnung / Peppol BIS 3 Validator

PDF/UA-1 rule reference › clause 7.18.1

PDF/UA-1 rule 7.18.1-2: … annotation whose hidden flag is not set and whose rectangle is not outside the crop-box has neither Contents key nor an Alt entry in the enclosing structure element

Not fixed automatically annotation, alt-text

What veraPDF reports

%1 annotation whose hidden flag is not set and whose rectangle is not outside the crop-box has neither Contents key nor an Alt entry in the enclosing structure element

veraPDF rule 7.18.1-2 = ISO 14289-1:2014 clause 7.18.1, test 2, checked on PDF object PDAnnot.

In Adobe Acrobat’s Accessibility Checker the closest item is “Tagged annotations”.

What the requirement says

An annotation (except Widget annotations or hidden annotations, or those having rectangle outside the crop-box) shall have either Contents key or an Alt entry in the enclosing structure element

Can it be fixed automatically?

Not fixed automatically. This failure needs the authoring tool or manual remediation; the automatic fix does not change it.

How to fix it by hand

Alternative text is human work: describe each image, formula or link in the authoring application (alt text field) or set it in the PDF editor's tag properties. No automatic tool can write a meaningful description for you.

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”.

Other rules in clause 7.18.1

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.