problem user mapping

hi all,

i'm alerdy install SAP netweaver ( SAP EP 6.20 SP 9 )

and then i create system landscap to connect SAp Ecc.50 and the connection is okay is working properly,

but if i try create user mapping the system error

Portal Runtime Error

An exception occurred while processing a request for :

iView : pcd:portal_content/administrator/super_admin/super_admin_role/com.sap.portal.user_administration/com.sap.portal.user_mapping/com.sap.portal.userMappingAdmin/com.sap.portal.userMappingAdmin

Component Name : com.sap.portal.usermanagement.admin.UserMappingAdmin

User Mapping not fully available..

Exception id: 10:51_18/05/06_0006_8700550

See the details for the exception ID in the log file

can you help, thanks for your help

rgds

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