Solution : https://service.sap.com/sap/support/notes/950745 (SAP Service marketplace login required)
Key words :
system administration -> system configuration -> universal worklist & workflow -> workflow open 'user interface' -> configure task types -> configuration, content administration -> workflow content -> workflow templates, collaboration task types click 'edit', terms java workflow tasks, workflow template administration, workflow administration, change configuration, task types, workflow templates, symptom create task
Related Notes :
1120557 | Requirements for Issue Handling in the Java Workflow Area |