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LDAPAttributeRemover is a tool for removing one or more attributes from the eDirectory applications. In case you have removed some attributes by mistake, then you can also use this tool to revert back the attributes. However, you cannot use this tool to remove mandatory attributes.
Disclaimer: As with everything else at NetIQ Cool Solutions, this content is definitely not supported by NetIQ, so Customer Support will not be able to help you if it has any adverse effect on your environment. It just worked for at least one person, and perhaps it will be useful for you too. Be sure to test in a non-production environment.