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Facts
application/x-www-form-urlencoded application/json Arguments
Required arguments
tokenstringRequiredAuthentication token bearing required scopes. Tokens should be passed as an HTTP Authorization header or alternatively, as a POST parameter.
xxxx-xxxxxxxxx-xxxxrole_idstringRequiredID of the role to which users will be assigned
R0001entity_idsarrayRequiredList of the entity IDs for which roles will be assigned. These can be Org IDs, Team IDs or Channel IDs
['T00000001', 'E00000002']user_idsarrayRequiredList of IDs from the users to be added to the given role
['U00000001', 'U00000002', 'U00000003']Usage info
With admin.roles.addAssignments, you can add members to a specified role, granting them the permission scopes that are assigned to that role.
The API will process all user, team, and org IDs passed. In cases where an invalid user or other entity ID is passed, the ID will be rejected and details (including the reason for the rejection) will be provided in the respective rejected_users and/or rejected_entities response.
Admin Roles
The following roles and their respective scope types can be assigned by Org Owners and Org Admins on Enterprise plans:
| Role | Role ID | Scope Type |
|---|---|---|
| Analytics Admin | Rl0L | Team or Org |
| Audit Logs Admin | Rl0C | Team or Org |
| Channel Admin | Rl01 | Team or Org |
| Channel Manager | Rl0A | Team or Org |
| Conversation Admin | Rl05 | Team or Org |
| DLP Admin | Rl09 | Org |
| Exports Admin | Rl0F | Org |
| Integrations Manager | Rl0D | Org |
| Legal Holds Admin | Rl04 | Org |
| Message Activity Manager | Rl0E | Org |
| Role Admin | Rl02 | Team or Org |
| Sales Admin | Rl0G | Org |
| Security Admin | Rl0J | Org |
| Slack Platform Developer | Rl0B | Team or Org |
| User Admin | Rl03 | Team or Org |
| Workflow Admin | Rl0K | Org |
Utilizing Admin API endpoints
This admin scope is obtained through version two of the OAuth V2 flow, but there are a few additional requirements. The app requesting this scope must be installed by an admin or Owner of an Enterprise organization. Also, the app must be installed on the entire org, not on an individual workspace. See below for more details.
If the app is installed by an Org Admin or Owner, ensure the Channel Management settings provide the appropriate permissions. The Org Admin or Owner installing the app must have the Channel Management role, and must also be granted access to Public channels and Private channels within this role. If these criteria aren't met, the Org Admin or Owner will receive a not_allowed error when attempting to install an app.
Admin API endpoints reach across an entire Enterprise organization, not individual workspaces.
For a token to be imbued with Admin scopes, it must be obtained from installing an app on the entire Enterprise org, not just a workspace within the organization.
To configure and install an app supporting Admin API endpoints on your Enterprise organization:
- Create a new Slack app. Your app will need to be able to handle a standard OAuth 2 flow.
- In the app's settings, select OAuth & Permissions from the left navigation. Scroll down to the section titled Scopes and add the
admin.*scope you want. Click the Save Changes button. - In the app's settings, select Manage Distribution from the left navigation. Under the section titled Share Your App with Other Workspaces, make sure all four sections have the green check. Then click the green Activate Public Distribution button.
- Under the Share Your App with Your Workspace section, copy the Sharable URL and paste it into a browser to initiate the OAuth handshake that will install the app on your organization. You must be logged in as an admin or Owner of your Enterprise organization to install the app.
- Check the dropdown in the upper right of the installation screen to make sure you are installing the app on the organization, not an individual workspace within the organization. See the image below for a visual.
- Once your app completes the OAuth flow, you will be granted an OAuth token that can be used for calling Admin API methods for your organization.

When installing an app to use an Admin API endpoint, be sure to install it on your Enterprise organization, not a workspace within the organization.
Response
This returns an ok: true response letting you know you successfully added the user(s) to the assigned role(s).
{
"ok": true
}
Typical error response if at least one role scope was invalid for the role you were adding. In the example you can see the Enterprise ID is what is causing the issue.
{
"ok": false,
"error": "failed_for_some_entities",
"rejected_entities": [
{
"id": "E123ABC456",
"error": "invalid_auth"
}
]
}
Errors
This table lists the expected errors that this method could return. However, other errors can be returned in the case where the service is down or other unexpected factors affect processing. Callers should always check the value of the ok parameter in the response.
access_deniedAccess to a resource specified in the request is denied.
accesslimitedAccess to this method is limited on the current network
account_inactiveAuthentication token is for a deleted user or workspace when using a bot token.
deprecated_endpointThe endpoint has been deprecated.
ekm_access_deniedAdministrators have suspended the ability to post a message.
enterprise_is_restrictedThe method cannot be called from an Enterprise.
failed_for_some_entitiesAt least one role scope ID was invalid
failed_for_some_usersAt least one user ID was invalid
failed_for_some_users_and_entitiesAt least one role scope ID was invalid
fatal_errorThe server could not complete your operation(s) without encountering a catastrophic error. It's possible some aspect of the operation succeeded before the error was raised.
feature_not_enabledThis API is currently not enabled.
internal_errorThe server could not complete your operation(s) without encountering an error, likely due to a transient issue on our end. It's possible some aspect of the operation succeeded before the error was raised.
invalid_actorThis API is only enabled for the Admins/Owners.
invalid_arg_nameThe method was passed an argument whose name falls outside the bounds of accepted or expected values. This includes very long names and names with non-alphanumeric characters other than _. If you get this error, it is typically an indication that you have made a very malformed API call.
invalid_argumentsThe method was called with invalid arguments.
invalid_array_argThe method was passed an array as an argument. Please only input valid strings.
invalid_authSome aspect of authentication cannot be validated. Either the provided token is invalid or the request originates from an IP address disallowed from making the request.
invalid_charsetThe method was called via a POST request, but the charset specified in the Content-Type header was invalid. Valid charset names are: utf-8 iso-8859-1.
invalid_form_dataThe method was called via a POST request with Content-Type application/x-www-form-urlencoded or multipart/form-data, but the form data was either missing or syntactically invalid.
invalid_post_typeThe method was called via a POST request, but the specified Content-Type was invalid. Valid types are: application/json application/x-www-form-urlencoded multipart/form-data text/plain.
invalid_role_idThe role type passed does not exist.
method_deprecatedThe method has been deprecated.
missing_post_typeThe method was called via a POST request and included a data payload, but the request did not include a Content-Type header.
missing_scopeThe token used is not granted the specific scope permissions required to complete this request.
no_permissionThe workspace token used in this request does not have the permissions necessary to complete the request. Make sure your app is a member of the conversation it's attempting to post a message to.
no_valid_entitiesNone of the entities passed were valid.
no_valid_usersNone of the users passed were valid.
not_allowed_token_typeThe token type used in this request is not allowed.
not_authedNo authentication token provided.
org_login_requiredThe workspace is undergoing an enterprise migration and will not be available until migration is complete.
ratelimitedThe request has been ratelimited. Refer to the Retry-After header for when to retry the request.
request_timeoutThe method was called via a POST request, but the POST data was either missing or truncated.
service_unavailableThe service is temporarily unavailable
team_access_not_grantedThe token used is not granted the specific workspace access required to complete this request.
team_added_to_orgThe workspace associated with your request is currently undergoing migration to an Enterprise Organization. Web API and other platform operations will be intermittently unavailable until the transition is complete.
token_expiredAuthentication token has expired
token_revokedAuthentication token is for a deleted user or workspace or the app has been removed when using a user token.
too_many_entitiesMore than 10 role scopes were passed.
too_many_usersMore than 10 users were passed.
two_factor_setup_requiredTwo factor setup is required.