Rman backup script doesn't work the same way on different servers

Hi,

I've one backup script running on 3 different production servers. On one server it's working correct as designed, on the other two not.

the retention is 2,, every Sunday the is made a level ) backup , the rest of the week level 1 backups. On the two servers where it went wrong, the backups are not deleted from disk after two weeks, so the disk fills up. when I do a list backup summary in rman I don't see the old backup, And often the level 0 backup from 2 weeks ago has disappeared from rman (only the backup of the archive log file from that Sunday is there.) the level 1 backup are still there.