Message Number list used by SAP ABAP Class CL_CTS_LOGGER (CTS logger service for new import steps)
SAP ABAP Class CL_CTS_LOGGER (CTS logger service for new import steps) is using
# Object Type Object Name Object Description Note
     
1 Message Number  PU - 609 Opening log for step &1, system &2, request &3, log key &4
2 Message Number  PU - 610 Writing and closing log of &1 message(s)