Request Syntax Request Parameters Response Syntax Response Elements Errors See Also

CreateGroup

Creates a new group in the specified user pool. For more information about user pool groups, see Adding groups to a user pool.

Note

Amazon Cognito evaluates AWS Identity and Access Management (IAM) policies in requests for this API operation. For this operation, you must use IAM credentials to authorize requests, and you must grant yourself the corresponding IAM permission in a policy.

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Request Syntax


{
   "Description": "string",
   "GroupName": "string",
   "Precedence": number,
   "RoleArn": "string",
   "UserPoolId": "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.

Description

A description of the group that you're creating.

Type: String

Length Constraints: Maximum length of 2048.

Required: No

GroupName

A name for the group. This name must be unique in your user pool.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Pattern: [\p{L}\p{M}\p{S}\p{N}\p{P}]+

Required: Yes

Precedence

A non-negative integer value that specifies the precedence of this group relative to the other groups that a user can belong to in the user pool. Zero is the highest precedence value. Groups with lower Precedence values take precedence over groups with higher or null Precedence values. If a user belongs to two or more groups, it is the group with the lowest precedence value whose role ARN is given in the user's tokens for the cognito:roles and cognito:preferred_role claims.

Two groups can have the same Precedence value. If this happens, neither group takes precedence over the other. If two groups with the same Precedence have the same role ARN, that role is used in the cognito:preferred_role claim in tokens for users in each group. If the two groups have different role ARNs, the cognito:preferred_role claim isn't set in users' tokens.

The default Precedence value is null. The maximum Precedence value is 2^31-1.

Type: Integer

Valid Range: Minimum value of 0.

Required: No

RoleArn

The Amazon Resource Name (ARN) for the IAM role that you want to associate with the group. A group role primarily declares a preferred role for the credentials that you get from an identity pool. Amazon Cognito ID tokens have a cognito:preferred_role claim that presents the highest-precedence group that a user belongs to. Both ID and access tokens also contain a cognito:groups claim that list all the groups that a user is a member of.

Type: String

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

Pattern: arn:[\w+=/,.@-]+:[\w+=/,.@-]+:([\w+=/,.@-]*)?:[0-9]+:[\w+=/,.@-]+(:[\w+=/,.@-]+)?(:[\w+=/,.@-]+)?

Required: No

UserPoolId

The ID of the user pool where you want to create a user group.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 55.

Pattern: [\w-]+_[0-9a-zA-Z]+

Required: Yes

Response Syntax


{
   "Group": { 
      "CreationDate": number,
      "Description": "string",
      "GroupName": "string",
      "LastModifiedDate": number,
      "Precedence": number,
      "RoleArn": "string",
      "UserPoolId": "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.

Group

The response object for a created group.

Type: GroupType object

Errors

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

GroupExistsException

This exception is thrown when Amazon Cognito encounters a group that already exists in the user pool.

HTTP Status Code: 400

InternalErrorException

This exception is thrown when Amazon Cognito encounters an internal error.

HTTP Status Code: 500

InvalidParameterException

This exception is thrown when the Amazon Cognito service encounters an invalid parameter.

HTTP Status Code: 400

LimitExceededException

This exception is thrown when a user exceeds the limit for a requested AWS resource.

HTTP Status Code: 400

NotAuthorizedException

This exception is thrown when a user isn't authorized.

HTTP Status Code: 400

ResourceNotFoundException

This exception is thrown when the Amazon Cognito service can't find the requested resource.

HTTP Status Code: 400

TooManyRequestsException

This exception is thrown when the user has made too many requests for a given operation.

HTTP Status Code: 400