> ## Documentation Index
> Fetch the complete documentation index at: https://docs.coreweave.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Identity Federation

> [card] [Why do I get a jti\_known error when I authenticate with a JWT?](https://docs.coreweave.com/support/models/articles/why-do-i-get-a-jti_known-error-when-authenticating-with-a-jwt)
>
> The error HTTP 400: means another session already exchanged the same JSON Web Token (JWT). By default, Weights & Biases  ...

> [card] [Why is Federated Identity unavailable when I create a service account?](https://docs.coreweave.com/support/models/articles/why-is-federated-identity-unavailable-when-i-create-a-service-account)
>
> When you create a service account from your organization's page, Authentication Method is unavailable and set to Generat ...