PAC: PDF Accessibility Checker error - "Document language metadata is not ISO-compliant."

[raeben3]

I am seeing a WCAG error in PAC that I've never seen before, "Document language metadata is not ISO-compliant."  This is a simple 1-page PDF generated using Acrobat plug-in in Word. Acrobat version is 2023.008.20458.  Language in the file is set to English. There are no other language assignments on the Tags or Content. Is this a result of today's (1/5/24) update?  I can reproduce the error on another file by doing a Save As from Acrobat, but it also goes away once I Save As Optimized.  I cannot resolve this error.  The file is tagged correctly, has no images, form fields, attachments or other features. It's a very simple text only file that reads well using a screen reader, but this error persists.

[GeekyWhiteGuy]

I've had this same error multiple times but have no idea how to fix it.

Anyone?

[S. S]

Hi @raeben3 @GeekyWhiteGuy,

Hope you are doing well. Sorry for the trouble, and the delayed response.

If you are still looking for a solution, you might want to check the root element in the tags panel.

This seems like an issue with the document's /lang tag not being set to English, which is causing the error.

You can check using the below steps:

• Open the Tags pane in Acrobat (View > Show/Hide > Navigation Panes > Tags).
• Right-click the root tag (<Document> or similar) and choose Properties.
• Ensure the /Lang attribute is explicitly set to en or en-US.

If this does not work, please share the file with me so I can have a better check at it.

-Souvik

[go-man-go]

Does the PDF have security settings? I get this error when checking the PDF/UA in PAC2024 if I protect the PDF against changes. Even if I omit the metadata, this error occurs.

Robert