Backup return code -8020
Every night we backup all our databases using the dbmcli command backup_start.
This has been working fine for some months, but one of the databases has started returning a code -8020.
I have looked in the dbmcli documentation, and while some return codes are documented, this one isn't.
The command does create a backup file.
The MaxDB backup logs do not record a full data backup.
Can anyone tell me what this code means, or point me to documentation for it?