# AddTagsToCertificate
Adds one or more tags to an ACM certificate. Tags are labels that you can use to identify and organize your AWS resources. Each tag consists of a `key` and an optional `value`. You specify the certificate on input by its Amazon Resource Name (ARN). You specify the tag by using a key-value pair.
You can apply a tag to just one certificate if you want to identify a specific characteristic of that certificate, or you can apply the same tag to multiple certificates if you want to filter for a common relationship among those certificates. Similarly, you can apply the same tag to multiple resources if you want to specify a relationship among those resources. For example, you can add the same tag to an ACM certificate and an Elastic Load Balancing load balancer to indicate that they are both used by the same website. For more information, see [Tagging ACM certificates](https://docs.aws.amazon.com/acm/latest/userguide/tags.html).
To remove one or more tags, use the [RemoveTagsFromCertificate](API_RemoveTagsFromCertificate.md) action. To view all of the tags that have been applied to the certificate, use the [ListTagsForCertificate](API_ListTagsForCertificate.md) action.
## Request Syntax
```
{
"CertificateArn": "string",
"Tags": [
{
"Key": "string",
"Value": "string"
}
]
}
```
## Request Parameters
For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).
The request accepts the following data in JSON format.
**Note**
In the following list, the required parameters are described first.
** [CertificateArn](#API_AddTagsToCertificate_RequestSyntax) **
String that contains the ARN of the ACM certificate to which the tag is to be applied. This must be of the form:
`arn:aws:acm:region:123456789012:certificate/12345678-1234-1234-1234-123456789012`
For more information about ARNs, see [Amazon Resource Names (ARNs)](https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html).
Type: String
Length Constraints: Minimum length of 20. Maximum length of 2048.
Pattern: `arn:[\w+=/,.@-]+:acm:[\w+=/,.@-]*:[0-9]+:[\w+=,.@-]+(/[\w+=,.@-]+)*`
Required: Yes
** [Tags](#API_AddTagsToCertificate_RequestSyntax) **
The key-value pair that defines the tag. The tag value is optional.
Type: Array of [Tag](API_Tag.md) objects
Array Members: Minimum number of 1 item. Maximum number of 50 items.
Required: Yes
## Response Elements
If the action is successful, the service sends back an HTTP 200 response with an empty HTTP body.
## Errors
For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).
** InvalidArnException **
The requested Amazon Resource Name (ARN) does not refer to an existing resource.
HTTP Status Code: 400
** InvalidParameterException **
An input parameter was invalid.
HTTP Status Code: 400
** InvalidTagException **
One or both of the values that make up the key-value pair is not valid. For example, you cannot specify a tag value that begins with `aws:`.
HTTP Status Code: 400
** ResourceNotFoundException **
The specified certificate cannot be found in the caller's account or the caller's account cannot be found.
HTTP Status Code: 400
** TagPolicyException **
A specified tag did not comply with an existing tag policy and was rejected.
HTTP Status Code: 400
** ThrottlingException **
The request was denied because it exceeded a quota.
** throttlingReasons **
One or more reasons why the request was throttled.
HTTP Status Code: 400
** TooManyTagsException **
The request contains too many tags. Try the request again with fewer tags.
HTTP Status Code: 400
** ValidationException **
The supplied input failed to satisfy constraints of an AWS service.
HTTP Status Code: 400
## Examples
### Add two tags to an ACM certificate
This example illustrates one usage of AddTagsToCertificate.
#### Sample Request
```
POST / HTTP/1.1
Host: acm.us-east-1.amazonaws.com
X-Amz-Target: CertificateManager.AddTagsToCertificate
X-Amz-Date: 20160414T162438Z
User-Agent: aws-cli/1.10.20 Python/2.7.3 Linux/3.13.0-83-generic botocore/1.4.11
Content-Type: application/x-amz-json-1.1
Authorization: AWS4-HMAC-SHA256 Credential=AKIAI44QH8DHBEXAMPLE/20160414/us-east-1/acm/aws4_request,
SignedHeaders=content-type;host;user-agent;x-amz-date;x-amz-target,
Signature=370a583d3532f14e0cb34ea51de782e9e5138171184bfede740f5f150251fa2f
{
"CertificateArn": "arn:aws:acm:us-east-1:111122223333:certificate/12345678-1234-1234-1234-123456789012",
"Tags": [{
"Key": "website",
"Value": "example.com"
},
{
"Key": "stack",
"Value": "production"
}]
}
```
#### Sample Response
```
HTTP/1.1 200 OK
x-amzn-RequestId: 640bd601-025d-11e6-baa2-cd9f4ef8cda6
Content-Type: application/x-amz-json-1.1
Content-Length: 0
Date: Thu, 14 Apr 2016 16:24:41 GMT
```
## See Also
For more information about using this API in one of the language-specific AWS SDKs, see the following:
+ [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/acm-2015-12-08/AddTagsToCertificate)
+ [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/acm-2015-12-08/AddTagsToCertificate)
+ [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/acm-2015-12-08/AddTagsToCertificate)
+ [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/acm-2015-12-08/AddTagsToCertificate)
+ [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/acm-2015-12-08/AddTagsToCertificate)
+ [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/acm-2015-12-08/AddTagsToCertificate)
+ [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/acm-2015-12-08/AddTagsToCertificate)
+ [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/acm-2015-12-08/AddTagsToCertificate)
+ [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/acm-2015-12-08/AddTagsToCertificate)
+ [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/acm-2015-12-08/AddTagsToCertificate)