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There is this content type and it has a field (decimal). I want to apply a uniqueness validation on it (no two nodes with the same "National Code" value). Apparently Field Validation module is the way to go. How do I achieve this ?

2 Answers 2

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You can achieve this with Unique Field module. Set the scope to Content Type and you should be good to go.

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  • +1 for mentioning a module that is designed solely to cope with that Feb 17, 2012 at 8:40
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I did it using the Field Validation module (Unique Value rule). It is pretty simple and gives you many other validation options that might come in handy.

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