cost component report

when run the cost component report with one moment type system taking the total value of movment type .But when u run the cost component report with two moment types system does not take the total amount of two movment types .As it is taking only the total amount of one moment type only .What is the reason for this case . Can any one help on this

Here moment types are 601 and 602 and this is a z report .

Thanks & Regards

Raj