The error 138.40015 occurs when an organization tries to hold two subscriptions for the same Unity product. To resolve this, select a different organization without that Unity license or create a new organization. For adding seats to an existing license, inform your Unity Account Manager with account details. ✨️
Cause:
An organization cannot hold two subscriptions for the same Unity product. If the organization you select when claiming a license already has that product attached, the claim fails with error 138.40015.
Resolution:
Select a different organization that does not already have a Unity license attached.
If you only have one organization, create a new one. See the Unity Knowledge Base article, How do I create a new Unity organization?
If you are adding seats to an existing organization license, inform your Unity Account Manager that you hold an active license and provide the associated account details (e.g., Organization ID or Primary Email).