Solution:
1. SELECT * FROM merc_psobj_event WHERE SD_CD = '<Service Domain>'
2. From a sqlplus or Toad version, do the following update:
update MERC_PSOBJ_EVENT set DONE_WRITING_EVENT = 'Y' where SD_CD = '<Service Domain>'
UPDATE MERC_PSOBJ_EVENT SET PROCESS_STATUS=2
WHERE PROCESS_STATUS <> 2 AND SD_CD = '<Service Domain>' AND CSR_ID = <CSR#>;
update merc_ps_swat_event set process_status = 2 where process_status <> 2 and SD_CD = '<Service Domain>' AND CSR_ID = <CSR#>;
3. Bounce the SCA after deleting the cache directories (data, log, and tmp).
4. Try to create the CSR from the Web again to reproduce the error. If yes, upload a new server.log