There are a few projects that are showing 0 costs for resources even after CSTools was run.
Release : 15.9.1
Component : CA PPM FINANCIAL MANAGEMENT
One cause is that there were actually 0 rates for the time period in question.
If this was a mistake and there should be a rate make sure there is now a valid line in the matrix to cover the period and then Create WIP Adjustments and Transfer the items back to the same task and resource and click the Calculate New Rate box/
Once the adjustments are done, Approve WIP Adjustments
Please refer to article