Solution : https://service.sap.com/sap/support/notes/775134 (SAP Service marketplace login required)
Key words : 
business partner overviewnote    component  short textnote   component  short text769775 decoupling error mdm 2, note  component  short text768738 mdm-md-bp dump, com_pcat_findilreference770997 crm md pro decoupling error mdm 2, application group -> sap netweaver components -> sap mdm -> sap mdm 2, /patches -> download support packages -> spam/saint updates -> spam update, scenario master data harmonizationnote    component  short textrefer, /patches -> sap software distribution center -> sap support packages, master data management solution read, scenario master data harmonization recommended, central master data management required
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