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Operational attributes are special attributes which are internal to the server. As stated in RFC 4512, par. 3.4 :
Some attributes, termed *operational attributes*, are used or Wiki Markup
maintained by servers for administrative and operational purposes.
As stated in \ [X.501\]: "There are three varieties of operational
attributes: Directory operational attributes, DSA-shared operational
attributes, and DSA-specific operational attributes".
Some operational attributes will be user modifiable, other won't. In this case, the attributes will be marked usuing the NO-USER-MODIFICATION flag
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