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Since r3 ExtVal uses the concept of constraint aspects for generic validation parameters (in case of bean-validaton validation it's a subset which is called validation payload).

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• ViolationSeverity
• DisableClientSideValidation
• CaseInsensitive

Mapped Constraint Source

The concept is similar to @JoinValidation. However, this version is more type-save and it is supported by the property- as well as the bean-validation module.

Since both modules support the same syntax you will find further information here.