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Gonçalo Sousa
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[Amazon Bedrock Connector] 403 error when using claude_v2 model
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aws-bedrock-connector
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Amazon Bedrock Connector (O11)
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Hello everyone,

I’m trying to use the Amazon Bedrock connector in OutSystems, but I always get a 403 Forbidden error.

I’ve already successfully used the Amazon Bedrock runtime library, so I know my credentials work. I’m using my Access Key ID, Secret Access Key, and the correct region (eu-west-1).

I’m trying to invoke the model "anthropic.claude-3-haiku-20240307-v1:0". I suspect the issue might be related to AWS Signature V4, but I’m not sure.

I’ve set up an IAM user with the AmazonBedrockFullAccess policy. Am I missing any other required permissions or configuration to invoke Claude 3 via the Bedrock connector? 


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31 Oct 2025
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2026-01-28 16-57-48
Mihai Melencu
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Hi @Gonçalo Sousa ,

A 403 error typically means the IAM user lacks the necessary permissions or hasn’t been granted explicit access to the model. 

Here are some links to some articles/posts that could help:

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31 Oct 2025
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