Grails custom message.properties

This really is a simple thing.... Now that I know how it works. But I was attempting to override the constraint validation messages in messages in message.properties. In the past I've either simply modified the default message or created custom validators and completely new messages. But I just wanted to override the default messages. Several documents, posts, and blogs say to follow what the Grails docs say and use {className}.{attributeName}.{errorCode} and then provide a sample. But, the thing is, the {errorCode} is not obvious as it is not the same format as what's in the default message.

Here's the thing, my 2-second tip: the Grails documentation for the contraints (http://grails.org/doc/1.1.x/) show the error code to use. For example, for min:

Error Code: className.propertyName.min.notmet

I would have never guessed that in a million years (I did guess a few others though, which is probably why I spent a half-hour guessing at this one but. come on, "min.notmet?"

So, for my ShipTo class's shipToNo attribute I used:

shipTo.shipToNo.min.notmet=Ship-To number must be greater than or equal to {3}