How to View Vendor wise Payment against WBS element

Hi,

Project requirement is to ....to view Vendor wise payment against WBS element....

i have checked standard PS reports like CJIA,S_ALR_********.....,Transaction from FI FBL1n but nothing is working...

After exploring from forums somwhere suggested to go Z Developement or activating Cash management/Fund Management.

Appreciate if somebody help me out in same...as client want to see even..payment given in installaments ...against WBS..?