How do I generate PDF/A using the core SDK without use of PDF/A converter?

Q: Can PDF/A be generated using PDFNet Core SDK?
A: You can generate PDF/A documents using the core PDFNet SDK and
without using ‘pdftron.PDF.PDFA.PDFACompliace’ converter.

Basically you would use ‘pdftron.PDF.PDFA.PDFACompliace’ validation
utility (which is available as part of core SDK) and adjust your PDF
generation to be fully compatible with PDF/A (e.g. be adding required
metadata tags or avoiding the use of specific features that are not
allowed in the standard). On the Cos/SDK level PDFNet doc.Save()
output is always compatible with PDF/A but missing metadata or
unsuported feaures would be reported as violations.

The main advantage of using ‘pdftron.PDF.PDFA.PDFACompliace’
converter () is that it could save lots of time/effort required to
make PDF/A compliant files. Also in case you are importing any PDF
content that is not directly created by your application (e.g. a cover
page, overlays, a result of PDF split/merge function) you would need
to normalize the data and the resulting document to PDF/A.