Request Syntax Request Parameters Response Syntax Response Elements Errors See Also

StartEventsDetectionJob

Important

Service availability notice: Amazon Comprehend topic modeling, event detection, and prompt safety classification features will no longer be available to new customers, effective April 30, 2026. For more information, see Amazon Comprehend feature availability change.

Starts an asynchronous event detection job for a collection of documents.

Request Syntax


{
   "ClientRequestToken": "string",
   "DataAccessRoleArn": "string",
   "InputDataConfig": { 
      "DocumentReaderConfig": { 
         "DocumentReadAction": "string",
         "DocumentReadMode": "string",
         "FeatureTypes": [ "string" ]
      },
      "InputFormat": "string",
      "S3Uri": "string"
   },
   "JobName": "string",
   "LanguageCode": "string",
   "OutputDataConfig": { 
      "KmsKeyId": "string",
      "S3Uri": "string"
   },
   "Tags": [ 
      { 
         "Key": "string",
         "Value": "string"
      }
   ],
   "TargetEventTypes": [ "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.

ClientRequestToken

An 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

DataAccessRoleArn

The Amazon Resource Name (ARN) of the 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

InputDataConfig

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

Type: InputDataConfig object

Required: Yes

JobName

The identifier of the events detection job.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 256.

Pattern: ^([\p{L}\p{Z}\p{N}_.:/=+\-%@]*)$

Required: No

LanguageCode

The language code of the input documents.

Type: String

Valid Values: en | es | fr | de | it | pt | ar | hi | ja | ko | zh | zh-TW

Required: Yes

OutputDataConfig

Specifies where to send the output files.

Type: OutputDataConfig object

Required: Yes

Tags

Tags to associate with the events detection job. A tag is a key-value pair that adds 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

TargetEventTypes

The types of events to detect in the input documents.

Type: Array of strings

Array Members: Minimum number of 1 item.

Length Constraints: Minimum length of 1. Maximum length of 40.

Pattern: [A-Z_]*

Required: Yes

Response Syntax


{
   "JobArn": "string",
   "JobId": "string",
   "JobStatus": "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.

JobArn

The Amazon Resource Name (ARN) of the events detection job. It is a unique, fully qualified identifier for the job. It includes the AWS account, AWS Region, and the job ID. The format of the ARN is as follows:

arn:<partition>:comprehend:<region>:<account-id>:events-detection-job/<job-id>

The following is an example job ARN:

arn:aws:comprehend:us-west-2:111122223333:events-detection-job/1234abcd12ab34cd56ef1234567890ab

Type: String

Length Constraints: Maximum length of 256.

Pattern: arn:aws(-[^:]+)?:comprehend:[a-zA-Z0-9-]*:[0-9]{12}:[a-zA-Z0-9-]{1,64}/[a-zA-Z0-9](-*[a-zA-Z0-9])*((/dataset/[a-zA-Z0-9](-*[a-zA-Z0-9])*)|(/version/[a-zA-Z0-9](-*[a-zA-Z0-9])*))?

JobId

An 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 32.

Pattern: ^([\p{L}\p{Z}\p{N}_.:/=+\-%@]*)$

JobStatus

The status of the events detection job.

Type: String

Errors

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

InternalServerException

An internal server error occurred. Retry your request.

HTTP Status Code: 500

InvalidRequestException

The request is invalid.

Detail: Provides additional detail about why the request failed.

HTTP Status Code: 400

KmsKeyValidationException

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

HTTP Status Code: 400

ResourceInUseException

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

HTTP Status Code: 400

TooManyRequestsException

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

HTTP Status Code: 400

TooManyTagsException

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