InvokeModel call over cross-region
Bedrock integration of Step Functions is now supported. Calling Claude 2 in us-west-2 from Step Functions in Tokyo region causes an error. I wonder if cross-region is not supported.
the follwing setup in Bedrock model identifier arn:aws:bedrock:us-west-2::foundation-model/anthropic.claude-v2
https://aws.amazon.com/about-aws/whats-new/2023/11/aws-step-functions-optimized-integration-bedrock/
The provided ARN is invalid for the service region (Service: BedrockRuntime, Status Code: 400, Request ID: 78e3a7d3-6284-4a36-8227-88376d71ad3e)
IAM Role Policyはus-west-2のARNを指定するように変更済みです
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Hi s_hiruta,
I am able to reproduce the error you are facing. I did the below testing with a role that has access to all bedrock API calls.
- Step function in Tokyo and Bedrock Model in us-east-1: I received the same error as you are getting.
- Step function and Bedrock model in us-east-1: The step function was able to successfully perform the InvokeModel operation.
Also, if you check the article [1] under “How to get started with Amazon Bedrock and AWS Step Functions” section it specifically mentions that “Before getting started, ensure that you create the state machine in a Region where Amazon Bedrock is available. For this example, use US East (N. Virginia), us-east-1.”
- One more observation is that in Step Function Bedrock model identifier selection lists only the models available in that specific region. In the below example only the models from ap-northeast-1 are listed by default.
So, it looks like step function can only call the InvokeModel API call in the same region where Amazon Bedrock is available.
Article links: [1] https://aws.amazon.com/blogs/aws/build-generative-ai-apps-using-aws-step-functions-and-amazon-bedrock/?trk=f3da5d15-8262-4ccc-b6ac-edb58d9955e7&sc_channel=el
Hope this helps.
