Steps I followed
1. Create employee master via PA40.
2. Executed report " /SHCM/RH_SYNC_BUPA_EMPL_SINGLE " for Employee to Business Partner synchronization.
****BP NOT CREATED*****
3. Checked application log <SLG1> and found following error <Required entry field Trading Partner No. is not filled: field VBUND in table BP001>
