I am trying to create a SageMaker Project in SageMaker Studio, but I keep getting the following error:

You are not authorized to use the Amazon SageMaker project templates. Please contact your administrator to authorize you to use them.

I have already attached the following IAM policies to my SageMaker execution role:

• AmazonSageMakerFullAccess
• AWSServiceCatalogEndUserFullAccess
• AmazonSageMakerServiceCatalogProductsApiGatewayServiceRolePolicy
• AmazonSageMakerServiceCatalogProductsCloudformationServiceRolePolicy
• AmazonSageMakerServiceCatalogProductsCodeBuildServiceRolePolicy
• AmazonSageMakerServiceCatalogProductsCodePipelineServiceRolePolicy
• AmazonSageMakerServiceCatalogProductsEventsServiceRolePolicy
• AmazonSageMakerServiceCatalogProductsGlueServiceRolePolicy
• AmazonSageMakerServiceCatalogProductsLambdaServiceRolePolicy

Additionally, my IAM trust policy for the execution role is:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "Service": [
                    "sagemaker.amazonaws",
                    "servicecatalog.amazonaws"
                ]
            },
            "Action": "sts:AssumeRole"
        }
    ]
}

Things I Have Tried:

1. Checked SageMaker Studio settings: My SageMaker Domain has Projects enabled.
2. Restarted SageMaker Studio to apply permission changes.
3. Ensured my IAM role is correctly assigned to SageMaker Studio.

Despite all of this, I still get the same error.

Question:

What am I missing? Are there additional permissions or configurations required to create SageMaker projects?