If you’re trying to access the Claude Sonnet 5 model on Amazon Bedrock and encounter an AccessDeniedException even though your control plane shows full authorization, here’s what you can do. First, double-check that your account has the necessary permissions. Since you are a root user, you already have broad access, but sometimes specific quotas or backend settings might limit access.
The next step is to request backend TPM quota provisioning for this model. This process involves ensuring that the backend resources for the model are properly allocated to your account. Contact the AWS support team or your account administrator to verify and request this quota increase or provisioning. They might need to check the current backend resource allocation and approve additional capacity.
While waiting for the provisioning, make sure that your account’s billing and entitlements are up-to-date. Sometimes, access issues happen if there’s a billing hold or entitlement restrictions, even if the control plane shows that the model is available and authorized.
Once your quotas are set and the provisioning is complete, try accessing the model again. If you continue to face issues, contacting AWS support with details about the error can help clarify any remaining restrictions or misconfigurations that need to be addressed.