Access to backup configuration
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Try to configure the time when Jira is in low charge.
If attachments is selected, the backup is limited to 48h each.
Use the Jira time displayed above to configure the hour.
Jira will choose in which minut of the hour selected will run, so not always will be at the same minut.
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But if it fails will appear this error indicating that we need to change the frequency:
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See Restore backup to restore the backup.