User Exit for CN41N report

Hi Experts,

I have a requirement to display CN41N report data by WBS Profit center and WBS Project type as 2 Separate columns. These 2 fields are captured for each WBS and different for each WBS level.

Could you suggest the user exit to be used for CN41N report to add below fields

1. WBS Profit center

2. WBS Poject type

Thanks in advance for all the help.

Regards

Ashish