Solution : https://service.sap.com/sap/support/notes/996261 (SAP Service marketplace login required)
Key words :
terms termcntl reason, relevant support package, asynchronous external steps, external step returns, external step executes, external job step, external step, external command, job terminates, job scheduler
Related Notes :
| 988038 | External commands: Control flag "Wait for termination" |