Use a foundation model in the Amazon Bedrock playground - Tutorial not working

The "operation not allowed" error you're encountering in the Amazon Bedrock playground is likely because you haven't explicitly requested access to the foundation models you're trying to use. Even if your AWS account is active, you need to go through a model access approval process before using any models in Amazon Bedrock.

To resolve this issue:

1. Navigate to the Amazon Bedrock console
2. Go to the "Model access" section in the left navigation pane under Bedrock configurations
3. Choose "Modify model access"
4. Select the specific foundation models you want to use
5. Submit a request for access to these models
6. Wait for approval before you can use them in the playground

If you've already submitted the request form but still see this error, there could be several reasons:

• Your request might still be pending approval
• There might be an issue with your AWS account permissions
• If you're using an AWS Organizations account, there might be Service Control Policies (SCPs) restricting access
• You might need specific IAM permissions like "bedrock:InvokeModel"

Also, ensure you're working in a region where the models are available, such as US East (N. Virginia/us-east-1) or US West (Oregon/us-west-2), as not all models are available in every AWS region.
Sources
ERROR in Bedrock playground: You have not filled out the request form. Fill out the form before getting access. | AWS re:Post
Bedrock model access | AWS re:Post
"Invalid Model Identifier Error in Amazon Bedrock and Unable to Request Specific Models" | AWS re:Post
Why am I getting "The provided model identifier is invalid" | AWS re:Post