Message Number list used by SAP ABAP Function Module ICL_ACTIVITYLOG_CHANGE (ICL: Change one entry of activity log)
SAP ABAP Function Module ICL_ACTIVITYLOG_CHANGE (ICL: Change one entry of activity log) is using
# Object Type Object Name Object Description Note
     
1 Message Number  ICL - 160 You cannot change the task
2 Message Number  ICL - 415 The entry you wanted to change does not exist in the activity list