{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "ModifyTGW",
      "Effect": "Allow",
      "Action": [
        "ec2:ModifyTransitGateway"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:transit-gateway/*",
        "arn:aws:ec2:*:*:transit-gateway-route-table/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:ResourceTag/CreatedBy": "AWSApplicationMigrationService"
        }
      }
    }
  ]
}