Solution : https://service.sap.com/sap/support/notes/1365443 (SAP Service marketplace login required)
Key words :
edit relationship category button, edit realtionship category, edit relationship button, accounts tab header, relationship category, relationshipcategory button, accounts tab, column header, custom tab', selected rows'
Related Notes :
| 1374657 | 1.5 SP3 SAMA .net/Java fixes Composite note |