...
To generate cash activity to the sub-portfolio, you must create a source rule to identify the source or source hierarchy that the build will use to identify and generate cash activity. If Submitting ADHOV ADHOC via Portfolio Data Center, use the Cash Activity Source rule in the Submit build screen, via the Cash Activity Source Rule parameter. The build will only build cash activity records if a cash activity source rule is used. The Cash Activity Source Rule parameter is also available in Automation center when creating a sub-portfolio build event. The sub-portfolio, complete with cash activity, can then be used to calculate performance.
...