I converted a dynamic (XFA) pdf file to pdfa-1b.
After that I tried to validate with pdfbox preflight an got the following results:
7.2: Error on MetaData, CreationDate present in the document catalog dictionary doesn’…...(removeAllAnnotations) { for (Page page : doc.getPages()) { page.getAnnotations()... from a PDF viewer or by extracting the XMP packet)? Are you...