To verify that the SharePoint Online app is set up correctly, perform a test backup and restore.
Back Up the Sites
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From the navigation pane, go to Protect > Office 365. The Office 365 apps page appears. 
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In the row for the app, click the action button  , and then click Back up. , and then click Back up.A message prompts you to confirm submission of the backup job. 
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Click Yes. 
Restore the Sites
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From the navigation pane, go to Protect > Office 365. The Office 365 apps page appears. 
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In the row for the app, click the action button  , and then click Restore. , and then click Restore.The sites page appears. 
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Select all the sites, and then click Restore. The restore dialog box appears, with options for restoring to the original location already selected. 
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Click Restore.