Solution : https://service.sap.com/sap/support/notes/431051 (SAP Service marketplace login required)
Key words : 
switch bupa sync, bupa xrol1, bupa xrol9, organizational units, crm system, organizational unit, business partner, terms crm_om_bp_integrate, integration solution, business partners
Related Notes : 
       
| 709467 | Name1 field truncated in business partner master record | 
| 390380 | Composite SAP note: HR/ALE distribution in EBP/CRM |