A custom trigger is created with a few attributes and used in a Real-Time Marketing journey. When any of the source fields mapped to the attributes in custom trigger at the journey level, a generic error message 'System Failure' is being thrown. It's quite difficult to figure out, what the issue is withing the execution of the custom trigger.

It would be great if the personalized error message can be displayed, rather than generic error message.

Ex: 'Attribute XYZ doesn't contain a value and is empty', rather than 'System Failure'.