Server Administration > Item Type Attributes > Customizing Error Messages for Constraints > Default Constraint Error Messages
  
Default Constraint Error Messages
If a user enters an invalid value for a field, or leaves an empty value for a mandatory field, Windchill RV&S displays a default error message.
For an invalid field value in a basic constraint, the default message is constructed as follows:
The field "{ConstrainedField}" is constrained by the type "{SourceValue}",
causing the value "{ConstrainedValue}" to be invalid.
For other constraint types (field relationship, rule, and IBPL), the default error message is:
The field "{ConstrainedField}" is constrained by the field(s) "{SourceField}", causing the value "{ConstrainedValue}" to be invalid.
For an empty mandatory field, the default message is constructed as follows:
The field "{ConstrainedField}" is mandatory and requires a value.
where
{SourceField} is replaced by a list of source fields of the constraint.
{SourceValue} is replaced by the source field value of the constraint.
{ConstrainedField} is replaced by the name of the constrained field.
{ConstrainedValue} is replaced by the values of the constrained field.