Within Disclosure Management, you can retrieve data from BW. This requires the installation and configuration of the BW Connector
On the following Wiki page, this procedure is explained - it provides a step-by-step approach on how to install this component
https://wiki.scn.sap.com/wiki/display/CPM/Installing+and+Configuring+the+BW+Connector
Please add comments if you have any questions or suggestions to improve
Marc