## Documentation Index

Access the complete documentation index at:
https://www.zoho.com/en-fr/books/kb/llms.txt

Use this file to discover all available documentation pages before proceeding.

# E-Invoicing

### Factur-X and E-Invoicing

*   [What level of Factur-X and Chorus Pro compatibility does Zoho Books support?](/en-fr/books/kb/e-invoicing/factur-x-chorus-pro-compatibility.html)
*   [Which invoice file should I rely on when both an NF525-signed PDF and a Factur-X file are available?](/en-fr/books/kb/e-invoicing/nf525-facturx-difference.html)
*   [How does Zoho Books handle incoming invoices and debit notes through PDP after September 2026?](/en-fr/books/kb/e-invoicing/incoming-invoices-debit-notes-pdp.html)