On this pageCompliance This section covers compliance-oriented output options in PolyDoc. Use pdf.pdfa for long-term archival constraints and eInvoice for structured invoicing workflows such as Factur-X / ZUGFeRD. All compliance guides PDF/AArchivingGenerate archival-friendly PDFs with configurable PDF/A level and optional post-conversion verification.E-InvoiceInvoicingEmbed structured Factur-X / ZUGFeRD invoice XML into a hybrid PDF for machine-readable accounting workflows.