# TagResource


Assigns one or more tags (key-value pairs) to the specified resource. Both sinks and links can be tagged. 

Tags can help you organize and categorize your resources. You can also use them to scope user permissions by granting a user permission to access or change only resources with certain tag values.

Tags don't have any semantic meaning to Amazon and are interpreted strictly as strings of characters.

You can use the `TagResource` action with a resource that already has tags. If you specify a new tag key for the alarm, this tag is appended to the list of tags associated with the alarm. If you specify a tag key that is already associated with the alarm, the new tag value that you specify replaces the previous value for that tag.

You can associate as many as 50 tags with a resource.

**Important**  
Unlike tagging permissions in other Amazon services, to tag or untag links and sinks you must have the `oam:ResourceTag` permission. The `iam:ResourceTag` permission does not allow you to tag and untag links and sinks.

## Request Syntax


```
PUT /tags/ResourceArn HTTP/1.1
Content-type: application/json

{
   "Tags": { 
      "string" : "string" 
   }
}
```

## URI Request Parameters


The request uses the following URI parameters.

 ** [ResourceArn](#API_TagResource_RequestSyntax) **   <a name="OAM-TagResource-request-uri-ResourceArn"></a>
The ARN of the resource that you're adding tags to.  
The ARN format of a sink is `arn:aws:oam:Region:account-id:sink/sink-id `   
The ARN format of a link is `arn:aws:oam:Region:account-id:link/link-id `   
For more information about ARN format, see [CloudWatch Logs resources and operations](https://docs.amazonaws.cn/AmazonCloudWatch/latest/logs/iam-access-control-overview-cwl.html).  
Pattern: `arn:(\w|-)+:oam:.+:.+:.+.*`   
Required: Yes

## Request Body


The request accepts the following data in JSON format.

 ** [Tags](#API_TagResource_RequestSyntax) **   <a name="OAM-TagResource-request-Tags"></a>
The list of key-value pairs to associate with the resource.  
Type: String to string map  
Map Entries: Minimum number of 0 items. Maximum number of 50 items.  
Key Length Constraints: Minimum length of 1. Maximum length of 128.  
Value Length Constraints: Minimum length of 0. Maximum length of 256.  
Required: Yes

## Response Syntax


```
HTTP/1.1 200
```

## 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).

 ** ResourceNotFoundException **   
The request references a resource that does not exist.    
 ** amznErrorType **   
The name of the exception.
HTTP Status Code: 404

 ** TooManyTagsException **   
A resource can have no more than 50 tags.  
HTTP Status Code: 400

 ** ValidationException **   
The value of a parameter in the request caused an error.  
HTTP Status Code: 400

## See Also


For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/oam-2022-06-10/TagResource) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/oam-2022-06-10/TagResource) 
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/oam-2022-06-10/TagResource) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/oam-2022-06-10/TagResource) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/oam-2022-06-10/TagResource) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/oam-2022-06-10/TagResource) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/oam-2022-06-10/TagResource) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/oam-2022-06-10/TagResource) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/oam-2022-06-10/TagResource) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/oam-2022-06-10/TagResource)