What happens when my organization exceeds D365 storage limits?

If you exceed your storage capacity, you’ll receive notifications alerting you to the over-capacity usage. These notifications occur as alerts in the Power Platform admin center. The following admin operations won’t be available when a tenant exceeds storage capacity entitlements:

  1. Create environment (currently enforced)
  2. Copy environment (starting August 24th)
  3. Restore environment (starting August 24th)

If this is happening to you, please contact a Microsoft-Certified Partner like TrellisPoint to assist with taking actions mitigate storage deficits.

For more information : https://docs.microsoft.com/en-us/power-platform/admin/whats-new-storage#what-happens-when-my-organization-exceeds-storage-entitlements