Release : 15.7
Component : CA PPM SAAS PROJECT MANAGEMENT
To calculate the team rate the cost plan was picking up a row from rate matrix that has all '*' in the columns, this is sort of a 'catch-all' row.
If that was not the case and if there was no rate association in the rate matrix, then when you were populating the cost plan ( 'populate from task assignments' ) we would land with an error "REVMGR-20728: Rates and Costs are both missing for one or more roles/resources".