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Value Must be Unique

The RuleUniqueValue attribute demands that there must not be any objects that have a particular property set to the same value as the current object's property. Here, this rule is applied to the UniqueValue and Collection properties.
To check this rule, save the current object.

Name

Ascending

Not filtered

Unique Value

Not filtered

Invalid RuleUniqueValueObject 1

Non-unique string

Invalid RuleUniqueValueObject 2

Non-unique string

Valid RuleUniqueValueObject

This string is unique

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