title: Apache PDFBox and PDF/A-3
body: <p>Is it possible to use Apache PDFBox to process PDF/A-3 documents? (Especially for changing field values?)</p>
  
  <p>The <a href="https://pdfbox.apache.org/1.8/cookbook/pdfacreation.html" rel="nofollow">PDFBox 1.8 Cookbook</a> says that it is possible to create PDF/A-1 documents with <code>pdfaid.setPart(1);</code></p>
  
  <ol>
  <li><p>Can I apply <code>pdfaid.setPart(3)</code> for a PDF/A-3 document?</p></li>
  <li><p>If not: Is it possible to read in a PDF/A-3 document, change some field values and safe it by what I have not need for >creation/conversion to PDF/A-3&lt; but the document is still PDF/A-3?</p></li>
  </ol>