Request Syntax Request Parameters Response Syntax Response Elements Errors Examples See Also

ListChildren

Lists all of the organizational units (OUs) or accounts that are contained in the specified parent OU or root. This operation, along with ListParents enables you to traverse the tree structure that makes up this root.

Note

Always check the NextToken response parameter for a null value when calling a List* operation. These operations can occasionally return an empty set of results even when there are more results available. The NextToken response parameter value is null only when there are no more results to display.

This operation can be called only from the organization's management account or by a member account that is a delegated administrator for an AWS service.

Request Syntax


{
   "ChildType": "string",
   "MaxResults": number,
   "NextToken": "string",
   "ParentId": "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.

ChildType

Filters the output to include only the specified child type.

Type: String

Valid Values: ACCOUNT | ORGANIZATIONAL_UNIT

Required: Yes

MaxResults

The total number of results that you want included on each page of the response. If you do not include this parameter, it defaults to a value that is specific to the operation. If additional items exist beyond the maximum you specify, the NextToken response element is present and has a value (is not null). Include that value as the NextToken request parameter in the next call to the operation to get the next part of the results. Note that Organizations might return fewer results than the maximum even when there are more results available. You should check NextToken after every operation to ensure that you receive all of the results.

Type: Integer

Valid Range: Minimum value of 1. Maximum value of 20.

Required: No

NextToken

The parameter for receiving additional results if you receive a NextToken response in a previous request. A NextToken response indicates that more output is available. Set this parameter to the value of the previous call's NextToken response to indicate where the output should continue from.

Type: String

Length Constraints: Maximum length of 100000.

Pattern: [\s\S]*

Required: No

ParentId

The unique identifier (ID) for the parent root or OU whose children you want to list.

The regex pattern for a parent ID string requires one of the following:

Root - A string that begins with "r-" followed by from 4 to 32 lowercase letters or digits.
Organizational unit (OU) - A string that begins with "ou-" followed by from 4 to 32 lowercase letters or digits (the ID of the root that the OU is in). This string is followed by a second "-" dash and from 8 to 32 additional lowercase letters or digits.

Type: String

Length Constraints: Maximum length of 100.

Pattern: ^(r-[0-9a-z]{4,32})|(ou-[0-9a-z]{4,32}-[a-z0-9]{8,32})$

Required: Yes

Response Syntax


{
   "Children": [ 
      { 
         "Id": "string",
         "Type": "string"
      }
   ],
   "NextToken": "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.

Children

The list of children of the specified parent container.

Type: Array of Child objects

NextToken

If present, indicates that more output is available than is included in the current response. Use this value in the NextToken request parameter in a subsequent call to the operation to get the next part of the output. You should repeat this until the NextToken response element comes back as null.

Type: String

Length Constraints: Maximum length of 100000.

Pattern: [\s\S]*

Errors

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

AccessDeniedException

You don't have permissions to perform the requested operation. The user or role that is making the request must have at least one IAM permissions policy attached that grants the required permissions. For more information, see Access Management in the IAM User Guide.

HTTP Status Code: 400

AWSOrganizationsNotInUseException

Your account isn't a member of an organization. To make this request, you must use the credentials of an account that belongs to an organization.

HTTP Status Code: 400

InvalidInputException

The requested operation failed because you provided invalid values for one or more of the request parameters. This exception includes a reason that contains additional information about the violated limit:

Note

Some of the reasons in the following list might not be applicable to this specific API or operation.

DUPLICATE_TAG_KEY: Tag keys must be unique among the tags attached to the same entity.
IMMUTABLE_POLICY: You specified a policy that is managed by AWS and can't be modified.
INPUT_REQUIRED: You must include a value for all required parameters.
INVALID_EMAIL_ADDRESS_TARGET: You specified an invalid email address for the invited account owner.
INVALID_ENUM: You specified an invalid value.
INVALID_ENUM_POLICY_TYPE: You specified an invalid policy type string.
INVALID_FULL_NAME_TARGET: You specified a full name that contains invalid characters.
INVALID_LIST_MEMBER: You provided a list to a parameter that contains at least one invalid value.
INVALID_PAGINATION_TOKEN: Get the value for the NextToken parameter from the response to a previous call of the operation.
INVALID_PARTY_TYPE_TARGET: You specified the wrong type of entity (account, organization, or email) as a party.
INVALID_PATTERN: You provided a value that doesn't match the required pattern.
INVALID_PATTERN_TARGET_ID: You specified a policy target ID that doesn't match the required pattern.
INVALID_PRINCIPAL: You specified an invalid principal element in the policy.
INVALID_ROLE_NAME: You provided a role name that isn't valid. A role name can't begin with the reserved prefix AWSServiceRoleFor.
INVALID_SYNTAX_ORGANIZATION_ARN: You specified an invalid Amazon Resource Name (ARN) for the organization.
INVALID_SYNTAX_POLICY_ID: You specified an invalid policy ID.
INVALID_SYSTEM_TAGS_PARAMETER: You specified a tag key that is a system tag. You can’t add, edit, or delete system tag keys because they're reserved for AWS use. System tags don’t count against your tags per resource limit.
MAX_FILTER_LIMIT_EXCEEDED: You can specify only one filter parameter for the operation.
MAX_LENGTH_EXCEEDED: You provided a string parameter that is longer than allowed.
MAX_VALUE_EXCEEDED: You provided a numeric parameter that has a larger value than allowed.
MIN_LENGTH_EXCEEDED: You provided a string parameter that is shorter than allowed.
MIN_VALUE_EXCEEDED: You provided a numeric parameter that has a smaller value than allowed.
MOVING_ACCOUNT_BETWEEN_DIFFERENT_ROOTS: You can move an account only between entities in the same root.
NON_DETACHABLE_POLICY: You can't detach this AWS Managed Policy.
TARGET_NOT_SUPPORTED: You can't perform the specified operation on that target entity.
UNRECOGNIZED_SERVICE_PRINCIPAL: You specified a service principal that isn't recognized.

HTTP Status Code: 400

ParentNotFoundException

We can't find a root or OU with the ParentId that you specified.

HTTP Status Code: 400

ServiceException

AWS Organizations can't complete your request because of an internal service error. Try again later.

HTTP Status Code: 500

TooManyRequestsException

You have sent too many requests in too short a period of time. The quota helps protect against denial-of-service attacks. Try again later.

For information about quotas that affect AWS Organizations, see Quotas for AWS Organizations in the AWS Organizations User Guide.

HTTP Status Code: 400

Examples

Example

The following example shows how to request a list of all of the child OUs in a parent root or OU.

Sample Request


POST / HTTP/1.1
X-Amz-Target: AWSOrganizationsV20161128.ListChildren

{
  "ChildType": "ORGANIZATIONAL_UNIT",
  "ParentId": "ou-examplerootid111-exampleouid111"
}

Sample Response


HTTP/1.1 200 OK
Content-Type: application/json


{
  "Children": [
    { 
      "Id": "ou-examplerootid111-exampleouid111",
      "Type":"ORGANIZATIONAL_UNIT"
    },
    {
      "Id":"ou-examplerootid111-exampleouid222",
      "Type":"ORGANIZATIONAL_UNIT"
    }
  ]
}