Hi @IniobongNkanga-8038 ,
Thank you for posting in this community.
OneDrive for Business provides up to 1 TB of storage space per user for most subscription plans. However, for subscriptions with at least 5 users, OneDrive for Business provides up to 5 TB of storage space per user.
If your customer's OneDrive is saying it's full but they don't have up to 1 TB of files, it's possible that there are other files taking up space on their OneDrive that they may not be aware of. They can try running a storage report to see what's taking up space on their OneDrive.
1.Open the web version of OneDrive.
2.Click the gear and select OneDrive Settings.
3.Select More Settings > Storage Metrics. Check out their OneDrive storage here.
If they still need more storage space, they can contact their Microsoft 365 administrator to request a storage limit increase.
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