Which operation is specifically not supported by the Repository workspace application?

The operation that is specifically not supported by the Repository workspace application is Active Learning. In the context of e-discovery and document management, Active Learning typically involves advanced machine learning techniques to assist with the review process, particularly in prioritizing documents based on relevance and predictive coding. This functionality is usually associated with more advanced analytics tools or modules that might not be integrated within the basic Repository workspace application.

The other listed operations—Document Search, Batch setting for reviews, and Document exporting—are fundamental capabilities that the Repository workspace usually provides. Document Search allows users to find relevant documents efficiently, batch settings enable users to manage multiple documents for review at once, and Document exporting is essential for retrieving and sharing documents outside the system.

Thus, the absence of Active Learning within the Repository workspace signifies its focus on more foundational document management tasks, rather than the advanced learning and predictive functionalities that Active Learning entails.