# CT approval requirements
<a name="constrained-unconstrained-ctis"></a>

AMS CTs always have two approval conditions, **AwsApprovalId** and **CustomerApprovalId** that indicate whether the RFC requires AMS or you, or anyone, to approve the execution.

The approval condition is somewhat related to the execution mode; for details, see [Automated and manual CTs](ug-automated-or-manual.md).

To find out the approval condition for a CT, you can look in the [AMS Change Type Reference](https://docs.aws.amazon.com/managedservices/latest/ctref/index.html), or run [GetChangeTypeVersion](https://docs.aws.amazon.com/managedservices/latest/ApiReference-cm/API_GetChangeTypeVersion.html). Both will also give you the CT `AutomationStatusId` or **Execution mode**.

You can approve RFCs by using the AMS console or with the following command:

```
aws amscm approve-rfc --rfc-id RFC_ID
```


**CT approval condition**  

| If the CT approval condition is | It requires approval from | And | 
| --- | --- | --- | 
| `AwsApprovalId: Required` | The AMS change type system, | No action is required. This condition is typical for automated CTs. | 
| `AwsApprovalId: NotRequiredIfSubmitter` | The AMS change type system and no one else, if the submitted RFC is for the account it was submitted against, | No action is required. This condition is typical for manual CTs because they will always be reviewed by AMS operators. | 
| `CustomerApprovalId: NotRequired` | The AMS change type system, | If the RFC passes syntax and parameter checks, it is auto approved. | 
| `CustomerApprovalId: Required` | The AMS change type system and you, | A notification is sent to you, and you must explicitly approve the RFC, either by responding to the notice, or running the [ApproveRfc](https://docs.aws.amazon.com/managedservices/latest/ApiReference-cm/API_ApproveRfc.html) operation. | 
| `CustomerApprovalId: NotRequiredIfSubmitter` | The AMS change type system and no one else, if you submitted the RFC. | If the RFC passes syntax and parameter checks, it is auto approved. | 
| Urgent Security Incident or Patch | AMS | Is auto approved and implemented. |