Solution : https://service.sap.com/sap/support/notes/1036108 (SAP Service marketplace login required)
Key words :
symptom status overview, status overview displays, create task entries, prerequisites status cumulation, task manager functionality, table /dbm/task, /dbm/task reason, task-status dumps, terms /dbm/oe_taskst, /dbm/oe_taskst
Related Notes :
969602 | Current Release Restrictions for DBM 6.0 |