You have noticed that your timesheets some times are canceled by a user system system and you are receiving the following communication:
SAP SuccessFactors Employee Central (EC) - All Versions
The job type: Time Sheet Generate Working Time Job has failed in a past date.
Since 1711 Time Sheet Generate job includes so called "self repair logic". The job that runs for the current week checks, if in the previous week the generate job run was successful.
If in the last day(s) of the previous week the job has failed, generate job for the current week first "repair" the previous week and regenerate the times for the days when the jobs failed.
In this case if a time sheet was already approved, it will be automatically canceled by the generate job.
system system self repair timesheets canceled by system system ECT-96799 , KBA , LOD-SF-EC-TIM , Time-Off , How To