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If a variable is added to the ‘User Variable’ section that matches a System or Environment Variable a warning message like the one shown below will be displayed. In the following example, a System Variable already exists, which has been made secure, when the same variable is added to the User Variable screen it will be automatically set to the same security level as the System Variable and this cannot be modified.
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In addition to this, if you add the same variable name twice the following message will be displayed.
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