Every aspect of Mexico e-invoicing is complex and the SAT has visibility into all of your transactions. Running spreadsheets for pagos and e-accounting is no longer an option for multinational organizations and a PAC integration is not always the right answer.
All PACs offer a Timbre Fiscal for CFDI, or signing on behalf of the government. From an end to end solution perspective, that is only 10% of the solution. Who owns the other 90% of the process at your company? And what do you do to integrate each UUIDs into your ERP and create your e-accounting reports?