https://userapps.support.sap.com/sap/support/knowledge/en/2626081
2626081 - Digital Invoice CFDI - How to activate IDOCs | SAP Knowledge Base Article
You implement SAP Note 2201909 and when performing the post-implement manual steps you don't know how to activate the IDOC's MXCFDIREQ001, MXCFDIRESP001,...
how to activatedigital invoice