CreateDocumentClassifier - Amazon Comprehend


Creates a new document classifier that you can use to categorize documents. To create a classifier, you provide a set of training documents that labeled with the categories that you want to use. After the classifier is trained you can use it to categorize a set of labeled documents into the categories. For more information, see Custom Classification.

Request Syntax

{ "ClientRequestToken": "string", "DataAccessRoleArn": "string", "DocumentClassifierName": "string", "InputDataConfig": { "AugmentedManifests": [ { "AttributeNames": [ "string" ], "S3Uri": "string" } ], "DataFormat": "string", "LabelDelimiter": "string", "S3Uri": "string" }, "LanguageCode": "string", "Mode": "string", "OutputDataConfig": { "KmsKeyId": "string", "S3Uri": "string" }, "Tags": [ { "Key": "string", "Value": "string" } ], "VolumeKmsKeyId": "string", "VpcConfig": { "SecurityGroupIds": [ "string" ], "Subnets": [ "string" ] } }

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.


A unique identifier for the request. If you don't set the client request token, Amazon Comprehend generates one.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 64.

Pattern: ^[a-zA-Z0-9-]+$

Required: No


The Amazon Resource Name (ARN) of the AWS Identity and Management (IAM) role that grants Amazon Comprehend read access to your input data.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 2048.

Pattern: arn:aws(-[^:]+)?:iam::[0-9]{12}:role/.+

Required: Yes


The name of the document classifier.

Type: String

Length Constraints: Maximum length of 63.

Pattern: ^[a-zA-Z0-9](-*[a-zA-Z0-9])*$

Required: Yes


Specifies the format and location of the input data for the job.

Type: DocumentClassifierInputDataConfig object

Required: Yes


The language of the input documents. You can specify any of the following languages supported by Amazon Comprehend: German ("de"), English ("en"), Spanish ("es"), French ("fr"), Italian ("it"), or Portuguese ("pt"). All documents must be in the same language.

Type: String

Valid Values: en | es | fr | de | it | pt

Required: Yes


Indicates the mode in which the classifier will be trained. The classifier can be trained in multi-class mode, which identifies one and only one class for each document, or multi-label mode, which identifies one or more labels for each document. In multi-label mode, multiple labels for an individual document are separated by a delimiter. The default delimiter between labels is a pipe (|).

Type: String


Required: No


Enables the addition of output results configuration parameters for custom classifier jobs.

Type: DocumentClassifierOutputDataConfig object

Required: No


Tags to be associated with the document classifier being created. A tag is a key-value pair that adds as a metadata to a resource used by Amazon Comprehend. For example, a tag with "Sales" as the key might be added to a resource to indicate its use by the sales department.

Type: Array of Tag objects

Required: No


ID for the AWS Key Management Service (KMS) key that Amazon Comprehend uses to encrypt data on the storage volume attached to the ML compute instance(s) that process the analysis job. The VolumeKmsKeyId can be either of the following formats:

  • KMS Key ID: "1234abcd-12ab-34cd-56ef-1234567890ab"

  • Amazon Resource Name (ARN) of a KMS Key: "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab"

Type: String

Length Constraints: Maximum length of 2048.

Pattern: .*

Required: No


Configuration parameters for an optional private Virtual Private Cloud (VPC) containing the resources you are using for your custom classifier. For more information, see Amazon VPC.

Type: VpcConfig object

Required: No

Response Syntax

{ "DocumentClassifierArn": "string" }

Response Elements

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

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


The Amazon Resource Name (ARN) that identifies the document classifier.

Type: String

Length Constraints: Maximum length of 256.

Pattern: arn:aws(-[^:]+)?:comprehend:[a-zA-Z0-9-]*:[0-9]{12}:document-classifier/[a-zA-Z0-9](-*[a-zA-Z0-9])*


For information about the errors that are common to all actions, see Common Errors.


An internal server error occurred. Retry your request.

HTTP Status Code: 500


The request is invalid.

HTTP Status Code: 400


The KMS customer managed key (CMK) entered cannot be validated. Verify the key and re-enter it.

HTTP Status Code: 400


The specified resource name is already in use. Use a different name and try your request again.

HTTP Status Code: 400


The maximum number of resources per account has been exceeded. Review the resources, and then try your request again.

HTTP Status Code: 400


The number of requests exceeds the limit. Resubmit your request later.

HTTP Status Code: 400


The request contains more tags than can be associated with a resource (50 tags per resource). The maximum number of tags includes both existing tags and those included in your current request.

HTTP Status Code: 400


Amazon Comprehend can't process the language of the input text. For all custom entity recognition APIs (such as CreateEntityRecognizer), only English, Spanish, French, Italian, German, or Portuguese are accepted. For most other APIs, such as those for Custom Classification, Amazon Comprehend accepts text in all supported languages. For a list of supported languages, see Languages Supported in Amazon Comprehend.

HTTP Status Code: 400

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: