executionRoleArn

The Amazon Resource Name (ARN) of the runtime role for a step on the cluster. The runtime role can be a cross-account IAM role. The runtime role ARN is a combination of account ID, role name, and role type using the following format: arn:partition:service:region:account:resource.

For example, arn:aws:IAM::1234567890:role/ReadOnly is a correctly formatted runtime role ARN.