Solution : https://service.sap.com/sap/support/notes/50104 (SAP Service marketplace login required)
Key words :
additional key words rddimpdp, importing transport requests, long-lasting bottleneck, background job rddimpdp, urgent individual imports, sap generally recommends, selected background jobs, started background jobs, execute background jobs, competing background job
Related Notes :
| 358813 | Job class of background jobs during import |
| 26966 | Background jobs do not start when transporting |