Required IAM permissions for AWS PCS
The IAM security principal that you're using must have permissions to work with AWS PCS IAM roles, service linked roles, AWS CloudFormation, a VPC, and related resources. For more information, see Identity and Access Management for AWS Parallel Computing Service, and Create a service-linked role in the AWS Identity and Access Management User Guide. You must complete all steps in this guide as the same user. To check the current user, run the following command:
aws sts get-caller-identity