Concurrent Employment/Global employment CE/GE Useful links/reports/Tcodes-OOHRCE_MAINS-Tcode

http://scn.sap.com/thread/2051422

http://scn.sap.com/thread/3168922

When you want to activate the external person ID in your system the first time, generate the Person ID infotype (0709) for all your employees using the HR_CE_GENERATE_PERSONID_EXT report.

OOHRCE_MAINS-Tcode

RPUFIXDS Repairing Data Sharing Inconsistencies