3452239 - Migration jobs not running or stuck after processing

• When working with the t-code LTMC and uploading a file, it was found that the data validation is stuck without progress, and the following warning message was shown in LTMC:
  • 'Validate Data' is running in the background (X% complete).
• The status message at the bottom of the screen shows the mentioned warning message:

• In the transaction SJOBREPO_STEPUSER, the 'step user' was maintained, and the profile SAP_ALL was assigned to it for Migration Cockpit jobs, but the current jobs are still stuck.

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental. 

SAP S/4HANA.

LTMC, op, on-premise, validate, file, upload, stuck, hang, S4, prepare, stuck, activity, activities, tasks, long, runtime, job, migration. , KBA , CA-LT-MC , S/4HANA Migration Cockpit , Problem