Solution : https://service.sap.com/sap/support/notes/835222 (SAP Service marketplace login required)
Key words :
operation operation operation operation operation operation-------------+---------+---------+---------+---------+---------+--------, special wage type /5u5, gcy x009/5u5 elimi, work tax area override, work tax area, wta override function, international rule x009, terms x009 reason, symptom rule u009, prerequisites program error
Related Notes :
| 643595 | WTA: Work Tax Area Override Revised II |