onsmsync utility fails SQL-284

Hello, We have a problem during the execution of the onsmsync utility after our daily backup (we are running IBM Informix Dynamic Server Version 11.50.FC3) Problem caused by scheduler who launched backup (L 1) twice at the same moment: 2009-07-13 18:00:02 4055042 3682336 /opt/informix/bin/onbar_d -b -L 1 2009-07-13 18:00:02 3539130 4468906 /opt/informix/bin/onbar_d -b -L 1 Backups are taken to TSM. After our backup, onsmsync utility runs, but since the 'double backup' it fails: 2009-07-16 16:11:44 4034602 4251794 onsmsync -g 18 -s 2009-07-16 16:11:51 4034602 4251794 Syncing sysutils and bootfile... 2009-07-16 16:11:53 4034602 4251794 SQL -284 A subquery has returned not exactly one row. 2009-07-16 16:11:53 4034602 4251794 onsmsync complete, returning 148 (0x94) We tried already onsmsync -b => no success, still the same error when executing onsmsync -g 18 -s In the meantime we have taken already a level 0 backup.So we removed level 1 backup from TSM. But still the same error when executing onsmsync -g 18 -s afterwards. Anyone an idea how we could solve this? Thanks in advance.