Solution : https://service.sap.com/sap/support/notes/762998 (SAP Service marketplace login required)
Key words :
set service property 'navigation folder template unit path', set service property 'navigation folder template active', set service property 'navigation folder template link target, choose system administration ->system configuration ->service configuration, wherethe 'template unit path' points, home ->work ->transactions ->'backend role, required additional navigation folders, uploaded backend role menu, link target pcd url, navigation structure template
Related Notes :
| 752465 | EP 6.0: Central note for role upload |