Thank you for reaching us!
We generally see this error with multi-tenant applications where the user is trying to access a application and resource API that exists in another directory.
The error message you received is because that your organization's domain is in not verified by administrator.
Try reaching out to your organization's administrator to perform DNS validation for the domain.
https://learn.microsoft.com/en-us/entra/identity/users/domains-manage
Also, please refer the below document https://docs.adenin.com/kb/how-to-resolve-error-aadsts65001/
Hope this helps. Do let us know if you any further queries.
Thanks,
Akhilesh.
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