Alter type help - update attribute to unique

Hello,

I need some (hopefully) quick help to update one of my attributes as unique. This way when a user is creating, importing, or updating a document via Webtop, the field will be checked as unique. The attribute is part of a custom type that is a subtype of dm_document. I have found in the DQL reference guide how to create a type with a unique attributes, but I'm just not clear on how to update an existing attribute.

Can this also be done in Composer?

Thanks for your help!

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DctmDvlpr

This can be done by overriding the doSave() method of TBO. Any such business validations / constraints to a specific object type should be implemented in TBO.