Solution : https://service.sap.com/sap/support/notes/1608739 (SAP Service marketplace login required)
Key words : 
single length key, solution kindly implement, incorrect field values, authorization object 's_translat', field values entered, field values, 'tlanguage' field, values 'en', symptom roles, generated properly
Related Notes : 
       
| 1607067 | Master Note for SAP Access Control 10.0 - Support Pack 6 |