Mexico Digital Invoice Implementation without XI.

Hi All,
We are in the process of generating Digital invoice for Mexico.
Is it possible to generate the Digital invoice without the XI system? If possible then what are the hurdles and challenges in achieving this. I did go through the list of Notes mentioned by SAP to implement Digital Signatures for Mexico. But they dont seem to mention about implementing with out XI system.
Also is there any standard process to generate the XML required for Mexico. Appreciate any clarification for the above queries..
Thanks in advance.
Regards,
Navin.

Hi Naveen,
Is important to consider three points at the moment of implementin Digital Invoice Mexico:
Enablement of ODN (official document numbering).
Enable digital signature in SAP.
Creation of XML.
You can perform the first two options withount PI/XI but the only problem will be the generation of XML, that for fiscal purposes is the digital invoice. If you are not using PI/XI you can do that by ABAP, Webmethods or any tool that generates XML.
If you decide to generate the XML with ABAP, you dont need to use IDOC but is still needed to create an output message that generates the XML instead a smartform or other. This can be sent automatically to customers or to any kind of repository to keep the files for fiscal term.
The structure of the XML must follows all Mexican requirements acording to Anexo 20 that you can find only in spanish.
I suggest you to read the attachments on the following note, where you can find the structure and requirements and order of each XML field:
1318342 - Digital Invoice Mexico IDoc basic type INVOIC02 Extension
Regarding the standard process to generate XML in SAP, the only information provided by SAP is for PI/XI, so your ABAP team needs to take a look for anexo 20 structure:
ftp://ftp2.sat.gob.mx/asistencia_servicio_ftp/publicaciones/cfd/Anexo20RMF2010.pdf
I hope this may help you.
Regards,
RP

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