# Use `RevokeGrant` with an AWS SDK or CLI
The following code examples show how to use `RevokeGrant`.
Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code example:
+ [Learn the basics](example_kms_Scenario_Basics_section.md)
------
#### [ CLI ]
**AWS CLI**
**To revoke a grant on a customer master key**
The following `revoke-grant` example deletes a grant from a KMS key. The following example command specifies the `grant-id` and the `key-id` parameters. The value of the `key-id` parameter can be the key ID or key ARN of the KMS key.
```
aws kms revoke-grant \
--grant-id 1234a2345b8a4e350500d432bccf8ecd6506710e1391880c4f7f7140160c9af3 \
--key-id 1234abcd-12ab-34cd-56ef-1234567890ab
```
This command produces no output. To confirm that the grant was revoked, use the `list-grants` command.
For more information, see [Retiring and revoking grants](https://docs.aws.amazon.com/kms/latest/developerguide/grant-manage.html#grant-delete) in the *AWS Key Management Service Developer Guide*.
+ For API details, see [RevokeGrant](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/kms/revoke-grant.html) in *AWS CLI Command Reference*.
------
#### [ Java ]
**SDK for Java 2.x**
There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/kms#code-examples).
```
/**
* Revokes a grant for the specified AWS KMS key asynchronously.
*
* @param keyId The ID or key ARN of the AWS KMS key.
* @param grantId The identifier of the grant to be revoked.
* @return A {@link CompletableFuture} representing the asynchronous operation of revoking the grant.
* The {@link CompletableFuture} will complete with a {@link RevokeGrantResponse} object
* if the operation is successful, or with a {@code null} value if an error occurs.
*/
public CompletableFuture revokeKeyGrantAsync(String keyId, String grantId) {
RevokeGrantRequest grantRequest = RevokeGrantRequest.builder()
.keyId(keyId)
.grantId(grantId)
.build();
CompletableFuture responseFuture = getAsyncClient().revokeGrant(grantRequest);
responseFuture.whenComplete((response, exception) -> {
if (exception == null) {
logger.info("Grant ID: [" + grantId + "] was successfully revoked!");
} else {
if (exception instanceof KmsException kmsEx) {
if (kmsEx.getMessage().contains("Grant does not exist")) {
logger.info("The grant ID '" + grantId + "' does not exist. Moving on...");
} else {
throw new RuntimeException("KMS error occurred: " + kmsEx.getMessage(), kmsEx);
}
} else {
throw new RuntimeException("An unexpected error occurred: " + exception.getMessage(), exception);
}
}
});
return responseFuture;
}
```
+ For API details, see [RevokeGrant](https://docs.aws.amazon.com/goto/SdkForJavaV2/kms-2014-11-01/RevokeGrant) in *AWS SDK for Java 2.x API Reference*.
------
#### [ PHP ]
**SDK for PHP**
There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/kms#code-examples).
```
/***
* @param string $grantId
* @param string $keyId
* @return void
*/
public function revokeGrant(string $grantId, string $keyId)
{
try{
$this->client->revokeGrant([
'GrantId' => $grantId,
'KeyId' => $keyId,
]);
}catch(KmsException $caught){
echo "There was a problem with revoking the grant: {$caught->getAwsErrorMessage()}.\n";
throw $caught;
}
}
```
+ For API details, see [RevokeGrant](https://docs.aws.amazon.com/goto/SdkForPHPV3/kms-2014-11-01/RevokeGrant) in *AWS SDK for PHP API Reference*.
------
#### [ Python ]
**SDK for Python (Boto3)**
There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kms#code-examples).
```
class GrantManager:
def __init__(self, kms_client):
self.kms_client = kms_client
@classmethod
def from_client(cls) -> "GrantManager":
"""
Creates a GrantManager instance with a default KMS client.
:return: An instance of GrantManager initialized with the default KMS client.
"""
kms_client = boto3.client("kms")
return cls(kms_client)
def revoke_grant(self, key_id: str, grant_id: str) -> None:
"""
Revokes a grant so that it can no longer be used.
:param key_id: The ARN or ID of the key associated with the grant.
:param grant_id: The ID of the grant to revoke.
"""
try:
self.kms_client.revoke_grant(KeyId=key_id, GrantId=grant_id)
except ClientError as err:
logger.error(
"Couldn't revoke grant %s. Here's why: %s",
grant_id,
err.response["Error"]["Message"],
)
raise
```
+ For API details, see [RevokeGrant](https://docs.aws.amazon.com/goto/boto3/kms-2014-11-01/RevokeGrant) in *AWS SDK for Python (Boto3) API Reference*.
------
#### [ SAP ABAP ]
**SDK for SAP ABAP**
There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/kms#code-examples).
```
TRY.
" iv_key_id = 'arn:aws:kms:us-east-1:123456789012:key/1234abcd-12ab-34cd-56ef-1234567890ab'
" iv_grant_id = '1a2b3c4d5e6f7g8h9i0j1k2l3m4n5o6p'
lo_kms->revokegrant(
iv_keyid = iv_key_id
iv_grantid = iv_grant_id
).
MESSAGE 'Grant revoked successfully.' TYPE 'I'.
CATCH /aws1/cx_kmsnotfoundexception.
MESSAGE 'Grant or key not found.' TYPE 'E'.
CATCH /aws1/cx_kmsinvalidgrantidex.
MESSAGE 'Invalid grant ID.' TYPE 'E'.
CATCH /aws1/cx_kmskmsinternalex.
MESSAGE 'An internal error occurred.' TYPE 'E'.
ENDTRY.
```
+ For API details, see [RevokeGrant](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html) in *AWS SDK for SAP ABAP API reference*.
------
For a complete list of AWS SDK developer guides and code examples, see [Using this service with an AWS SDK](sdk-general-information-section.md). This topic also includes information about getting started and details about previous SDK versions.