IT 2010 WT's appear twice in payslip - WBS element wise

Hi All,

I am maintaining WT's under IT 2010 with same date but different WBS element as below,

In PA30 HR Master Data,

Date                    IT              WT(OT)            Amount         WBS element

01.01.2015        2010           6001            25                  EOB123

01.01.2015        2010           6001            75                  EOB123

01.01.2015        2010           6001            40                  EOB456

01.01.2015        2010           6001            30                  EOB456

In Payslip, the WT's are getting split and getting displayed in individual line items - WBS wise as below,

Example: In Payslip,

Overtime                      100

Overtime                        70

I want the payslip to display the amount in single line as below even though different WBS elements are maintained,

Overtime                     170

Regards

Denies