Unique Validation Message is not displaying

Hi Guys In My Application i have customerId. I have set a Unique Validation Rule in the Domain Model. I am getting error message as described in "icon 1" But i should get error message as "Icon 2". Can you guys Please help me with this.
1 answers

Is it a project with multiple languages? Keep in mind you need to define the error per language. So if you have multiple languages, toggle between them in the Modeler and open the validation rule to see whether all info is there.