CFDI40152
El valor del campo ResidenciaFiscal no puede ser MEX.
In English The receiver's ResidenciaFiscal cannot be MEX: it is the country of a foreign receiver.
error: the document is invalid
What the rule checks
As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.