## -126: Data backup missing (backup history lost)

### Explanation:

You tried to save the log area by starting a log backup (interactive log backup, or activating the automatic log backup). This is not allowed in the current operating state, because there is no preceding data backup that can be used for restoring the saved log area later on.

### User Action:

Create a complete data backup to begin the backup history. Then, repeat the required log backup.