Warning about the limit of policies for the role, but no errors in the deployment process

[ofalei]

After adding the Lambda Insights extension, we started to see the following warning during stack synthesis:

[Warning at /challenge-staging-stateless/challenge-staging-lambdas/Role] Policy too large: 91 exceeds the maximum of 20 managed policies attached to a Role

However, the generated CloudFormation template does not contain that many policies, and there is only one policy CloudWatchLambdaInsightsExecutionRolePolicy attached to the Lambda Execution Role, also there is no error during the deployment process.

It is important to note that all Lambda functions in the stack share the same Role. I think if we used separate, auto-generated roles for each lambda function, we wouldn't even see this warning, but that's what we have at the moment, and we can't understand why there is a discrepancy between this warning and the actual CloudFormation template.

Is anyone familiar with this problem?

Thank you!

Language:

Python

CDK version:

aws-cdk@2.42.0

Node:

v16.13.0

OS

macOS, Ubuntu