# CreateCollection
<a name="API_CreateCollection"></a>

Creates a collection in an AWS Region. You can add faces to the collection using the [IndexFaces](API_IndexFaces.md) operation. 

For example, you might create collections, one for each of your application users. A user can then index faces using the `IndexFaces` operation and persist results in a specific collection. Then, a user can search the collection for faces in the user-specific container. 

When you create a collection, it is associated with the latest version of the face model version.

**Note**  
Collection names are case-sensitive.

This operation requires permissions to perform the `rekognition:CreateCollection` action. If you want to tag your collection, you also require permission to perform the `rekognition:TagResource` operation.

## Request Syntax
<a name="API_CreateCollection_RequestSyntax"></a>

```
{
   "CollectionId": "string",
   "Tags": { 
      "string" : "string" 
   }
}
```

## Request Parameters
<a name="API_CreateCollection_RequestParameters"></a>

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.

 ** [CollectionId](#API_CreateCollection_RequestSyntax) **   <a name="rekognition-CreateCollection-request-CollectionId"></a>
ID for the collection that you are creating.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 255.  
Pattern: `[a-zA-Z0-9_.\-]+`   
Required: Yes

 ** [Tags](#API_CreateCollection_RequestSyntax) **   <a name="rekognition-CreateCollection-request-Tags"></a>
 A set of tags (key-value pairs) that you want to attach to the collection.   
Type: String to string map  
Map Entries: Minimum number of 0 items. Maximum number of 200 items.  
Key Length Constraints: Minimum length of 1. Maximum length of 128.  
Key Pattern: `^(?!aws:)[\p{L}\p{Z}\p{N}_.:/=+\-@]*$`   
Value Length Constraints: Minimum length of 0. Maximum length of 256.  
Value Pattern: `^([\p{L}\p{Z}\p{N}_.:/=+\-@]*)$`   
Required: No

## Response Syntax
<a name="API_CreateCollection_ResponseSyntax"></a>

```
{
   "CollectionArn": "string",
   "FaceModelVersion": "string",
   "StatusCode": number
}
```

## Response Elements
<a name="API_CreateCollection_ResponseElements"></a>

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

 ** [CollectionArn](#API_CreateCollection_ResponseSyntax) **   <a name="rekognition-CreateCollection-response-CollectionArn"></a>
Amazon Resource Name (ARN) of the collection. You can use this to manage permissions on your resources.   
Type: String

 ** [FaceModelVersion](#API_CreateCollection_ResponseSyntax) **   <a name="rekognition-CreateCollection-response-FaceModelVersion"></a>
Version number of the face detection model associated with the collection you are creating.  
Type: String

 ** [StatusCode](#API_CreateCollection_ResponseSyntax) **   <a name="rekognition-CreateCollection-response-StatusCode"></a>
HTTP status code indicating the result of the operation.  
Type: Integer  
Valid Range: Minimum value of 0.

## Errors
<a name="API_CreateCollection_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** AccessDeniedException **   
You are not authorized to perform the action.  
HTTP Status Code: 400

 ** InternalServerError **   
Amazon Rekognition experienced a service issue. Try your call again.  
HTTP Status Code: 500

 ** InvalidParameterException **   
Input parameter violated a constraint. Validate your parameter before calling the API operation again.  
HTTP Status Code: 400

 ** ProvisionedThroughputExceededException **   
The number of requests exceeded your throughput limit. If you want to increase this limit, contact Amazon Rekognition.  
HTTP Status Code: 400

 ** ResourceAlreadyExistsException **   
A resource with the specified ID already exists.  
HTTP Status Code: 400

 ** ServiceQuotaExceededException **   
  
The size of the resource exceeds the allowed limit. For more information, see [Guidelines and quotas in Amazon Rekognition](https://docs.aws.amazon.com/rekognition/latest/dg/limits.html).   
HTTP Status Code: 400

 ** ThrottlingException **   
Amazon Rekognition is temporarily unable to process the request. Try your call again.  
HTTP Status Code: 500

## See Also
<a name="API_CreateCollection_SeeAlso"></a>

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/rekognition-2016-06-27/CreateCollection) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/rekognition-2016-06-27/CreateCollection) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/rekognition-2016-06-27/CreateCollection) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/rekognition-2016-06-27/CreateCollection) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/rekognition-2016-06-27/CreateCollection) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/rekognition-2016-06-27/CreateCollection) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/rekognition-2016-06-27/CreateCollection) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/rekognition-2016-06-27/CreateCollection) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/rekognition-2016-06-27/CreateCollection) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/rekognition-2016-06-27/CreateCollection)