Solution : https://service.sap.com/sap/support/notes/488707 (SAP Service marketplace login required)
Key words :
'csabupa<gp-nummer>', r3aubupa<bp-number>, text 'program error, initial kunnr exist, suitable support package, attached advance correction, replace business partners, business partner, business document, middleware-portal
Related Notes :
| 436843 | IS-M/CRM: Business partner exchange between CRM and IS-M |