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Classifying Individual Users 
You can assign a user type to a user when you create the user. This is especially useful, if you have already performed a system measurement, and have classified all users that exist when doing so.
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1. Start the user maintenance (transaction SU01) by choosing Tools ® Administration ® User Maintenance ® User.
2.
Specify a user or an alias, and choose
Change, Create,
or Copy.
As of SAP Web Application Server 6.10, the contractual user type and the special version are copied when you copy a user.
3. Choose the License Data tab page in change mode.
4. Use the input help to select the contractual user type, and, if necessary, assign a special version or a country surcharge.

Alternatively, you can assign a reference user to the user on the Roles tab page.
5. Save your entries.