Introduction
Within a journey, it is possible to enrich a mailing by adding additional fields. This option is present in the advanced settings of the sending nodes.
The field name is invalid
The name of a field must comply with the following rules:
only alphanumeric characters (A-Z, 0-9) or underscore;
unauthorized spaces;
must not start with a number ;
must not exceed 255 characters;
If one of these rules is not respected, execution will fail. The field will have to be renamed.
Conclusion
Once this warning has been lifted, the journey can be restarted.