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CFD v3.3 Examples

Here are some example XML documents for Anexo 20 Versión 3.3​ (CFDi v3.3) as specified by the Servicio de Administración Tributaria (SAT) in Mexico. The analysis and signing was carried out using FirmaSAT. Updated 2017-06-07 to reflect latest specifications as amended by SAT in May 2017.

All the XML documents below have been validated against the XSD files published by SAT. The values used for the attributes are nonsense ones picked at random just for testing purposes, but they are still valid XML. (For example, we have not used any of the guidelines in GuíaAnexo20.pdf or Guia_comple_pagos.pdf, but that does not matter for the purposes of creating the cadena original and the sello.)

We assert that each pipe-string (cadena original) provided here is correct according to the Secuencia de Formación in the PDF specification files published by SAT.

If you think there is an error here, please send us a message, preferably showing what you consider the correct cadena original should be.

For a detailed explanation, see How to compose the cadena original for a CFD v3.3 document.

Notes

1. The file cfdv33-signed-tfd.xml is the file cfdv33-base.xml signed by the holder of the certificate with serial number 40001000000300000337. The corresponding private key has password 12345678a.
2. The TimbreFiscalDigital element in the file cfdv33-signed-tfd.xml has been signed by the holder of the certificate with serial number 20001000000100005761. The cadena original de un timbre (pipe-string) has digest value 32e6e39ab862e1445cb5dcd3418f16d79308680734ff6e87642a44f60a402f97. You can extract the pipe-string using

   FirmaSAT PIPESTRING -f cfdv33-signed-tfd.xml
   

   and compute its digest value with

   FirmaSAT FORMDIGEST -f cfdv33-signed-tfd.xml
   

3. There were errors in the XSLT file cadenaoriginal_3_3.xslt which were quietly fixed on 19 May 2017. The latest XSLT file (May 2017) now produces an identical cadena original to ours, which matches the Secuencia de Formación in cfdv33.pdf.
4. The problem with Pagos10 was fixed on 31 May 2017 when a new version of Pagos10.pdf was released with the Secuencia de Elementos a Integrar en la Cadena Original now matching the output from Pagos10.xslt. The result above for cfdv33-pagos10.xml has been amended to reflect this change.
5. The Pagos10 example includes all possible nodes including the Impuestos because it is valid XML according to the XSD and we want to test that the cadena original is created correctly. Having defined this complicated node in the XSD specification, the guidelines then say "Nodo: Impuestos Este nodo no debe existir". Go figure! Thanks to Jacob Levine and all the others who have pointed this out.
6. The minimal example for Pagos10 has the minimum required fields required for a valid CFDiv3.3 document with Pagos10. Thanks to Luis Barriga for constructing this example.
7. 2017-07-14: We removed the examples with a detallista complemento. Apparently this is no longer used with CFDi v3.3.
   2017-09-30: No, it's back now and included for CFDiv3.3 as of 18 September 2017. See Complementos para Factura - Nota: Aplica para factura versión 3.2 y 3.3. No changes apparently to the detallista specification from 2009, so no changes required for FirmaSAT (we never actually removed the feature).

Reference documents

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This page first published 2 May 2017. Last updated 10 September 2025.

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