Receipt of EDI Invoices in Mexico according to CFDI

Hello,

Has anyone faced any problems with incoming EDI Invoices that are now (from 2014) aligned with CFDI in Mexico?

My doubts are:

1) Does EDI std carry any special information that CFDI forces ( e.g. the electronic stamp that PAC delivers?)

2) Is the invoice receiver obliged to do any control before accepting and paying the invoice? (and if this should be automatically supported in EDI Invoices)

Anyone who has got such a flow up and running - please share your experience!

Thanks!

Tomek