Amazon Bedrock console errors: “Invalid model identifier” & “ValidationException: Operation not allowed”

I started my AWS account 1 day before they retired the model access page. I enabled 4 models and all of them worked fine till the next day. Since they retired that page, none of the models including the 4 I had already enabled and used work successfully work. I get the same Playground error: “ValidationException: Operation not allowed”.

The errors you're experiencing in the Amazon Bedrock console are likely related to model access permissions rather than a console/UI issue. Even though you can list foundation models via CLI and have administrator access, you still need to explicitly request and be granted access to specific foundation models before you can use them in the console.

Here's what's happening and how to fix it:

1. Model Access Requirement: Amazon Bedrock requires explicit model access to be granted before you can use foundation models, even with administrator or root privileges. This is a deliberate access control mechanism.

2. How to Request Access:

• Navigate to the Amazon Bedrock console
• Go to "Model access" under Bedrock configurations in the left navigation pane
• Choose "Modify model access"
• Select the specific models you want to use
• Review the terms and submit your request

3. Region Considerations: Make sure you're requesting access to models in the specific region you want to use them in. Not all models are available in every region, so you'll need to check availability for both ap-south-1 and us-east-1.

4. Approval Process: After requesting access, there may be a waiting period for approval. Some models might have additional requirements or eligibility criteria.

5. Workaround: Until you have model access granted, you can continue to use the CLI for operations that don't require direct model invocation. However, to use the playground or dashboard features, you'll need to complete the model access request process.

The "Invalid model identifier" and "ValidationException: Operation not allowed" errors are typical indicators that you're trying to access models that you haven't been granted permission to use, even though you can see them listed in the CLI.
Sources
"Invalid Model Identifier Error in Amazon Bedrock and Unable to Request Specific Models" | AWS re:Post
The provided model identifier is invalid | AWS re:Post
Why am I getting "The provided model identifier is invalid" | AWS re:Post
Resolve errors when I fine-tune models on Amazon Bedrock | AWS re:Post