Scp Tag enforcement is not working on Ec2.

Question

I have created an SCP to deny ec2 resource creation if there is no tag. The instance is only get created if it has an environment tag key mentioned in it.

Here is my policy :

```
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "Scp1",
      "Effect": "Deny",
      "Action": [
        "ec2:CreateTags",
        "ec2:RunInstances"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:instance/*",
        "arn:aws:ec2:*:*:volume/*"
      ],
      "Condition": {
        "ForAllValues:StringEquals": {
          "aws:RequestTag/environment": "true"
        }
      }
    }
  ]
}
```

Answer

Yes I am trying to achieve this thing but I want to achieve this by using AWS SCP.
All post which I have seen they all have same json file as mine. But while implementation it is not working.

Answer

I guess you are trying to achieve something like this: https://aws.amazon.com/premiumsupport/knowledge-center/iam-policy-tags-deny/ (Sid: AllowRunInstancesWithRestrictions1)

Your policy can be modified as follow:

```
{
    "Effect": "Deny",
    "Action": [
        "ec2: CreateTags",
        "ec2: RunInstances"
    ],
    "Resource": [
        "arn:aws:ec2:*:*:instance/*",
        "arn:aws:ec2:*:*:volume/*"
    ],
    "Condition": {
        "StringNotLike": {
            "aws:RequestTag/cost_center": "?*"
        }
    }
}
```

Scp Tag enforcement is not working on Ec2.

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