Scoping OAuth Clients to Specific Divisions for Multi-Tenant BPO Access

What You Will Build

• One sentence: You will build a Python script that authenticates via OAuth and retrieves user data scoped strictly to a specific division ID.
• One sentence: This uses the Genesys Cloud Pure Cloud Platform Client V2 SDK and the /api/v2/users endpoint with the divisionId query parameter.
• One sentence: The code is written in Python 3.9+ using the genesys-cloud-purecloud-platform-client library.

Prerequisites

• OAuth Client Type: Confidential Client (Client Credentials Grant).
• Required Scopes: user:read (for reading user data), division:read (if querying division metadata).
• SDK Version: genesys-cloud-purecloud-platform-client >= 135.0.0.
• Runtime Requirements: Python 3.9 or higher.
• External Dependencies:
  • genesys-cloud-purecloud-platform-client
  • python-dotenv (for secure credential management)

Authentication Setup

In a multi-tenant BPO environment, the OAuth client itself does not enforce division scoping. The OAuth token represents the identity of the application. The scoping happens at the API call level by explicitly passing the divisionId in the request headers or query parameters. However, the client must have the necessary permissions to access the target division.

First, install the required packages:

pip install genesys-cloud-purecloud-platform-client python-dotenv

Create a .env file in your project root with your client credentials and the target division ID.

GENESYS_CLIENT_ID=your_client_id
GENESYS_CLIENT_SECRET=your_client_secret
GENESYS_REGION=us-east-1
TARGET_DIVISION_ID=your_target_division_uuid

The authentication logic uses the OAuthApi to obtain a bearer token. The genesys-cloud-purecloud-platform-client handles token refresh automatically when using the PlatformClient singleton, but understanding the flow is critical for debugging multi-tenant isolation issues.

import os
from dotenv import load_dotenv
from purecloud_platform_client import (
    PlatformClient,
    Configuration,
    OAuthApi,
    ApiClient,
    ApiException
)

load_dotenv()

def get_platform_client() -> PlatformClient:
    """
    Initializes and configures the Genesys Cloud Platform Client.
    """
    # Load credentials from environment variables
    client_id = os.getenv("GENESYS_CLIENT_ID")
    client_secret = os.getenv("GENESYS_CLIENT_SECRET")
    region = os.getenv("GENESYS_REGION", "us-east-1")

    if not client_id or not client_secret:
        raise ValueError("GENESYS_CLIENT_ID and GENESYS_CLIENT_SECRET must be set in environment.")

    # Configure the client with the correct region
    config = Configuration(
        host=f"https://{region}.pure.cloudapi.net",
        client_id=client_id,
        client_secret=client_secret
    )

    # Create the platform client instance
    # The SDK handles OAuth token acquisition and refresh automatically
    # when API calls are made via the generated API classes.
    return PlatformClient(configuration=config)

# Initialize the client
pc = get_platform_client()

Implementation

Step 1: Validate Division Access and Retrieve Division ID

Before querying users, it is prudent to verify that the OAuth client has access to the specific division. In Genesys Cloud, if a client attempts to access a division it does not have permission for, it will receive a 403 Forbidden or an empty result set depending on the endpoint.

We will use the DivisionsApi to fetch the division details. This confirms the division exists and is accessible to the current OAuth context.

from purecloud_platform_client import DivisionsApi

def validate_division_access(division_id: str) -> dict:
    """
    Validates that the OAuth client can access the specified division.
    
    Args:
        division_id (str): The UUID of the target division.
        
    Returns:
        dict: The division object if accessible.
        
    Raises:
        ApiException: If the division is not found or access is denied.
    """
    divisions_api = DivisionsApi(pc)
    
    try:
        # Endpoint: GET /api/v2/divisions/{divisionId}
        # Scope: division:read
        response = divisions_api.get_divisions_division_id(division_id)
        
        if response.body is None:
            raise ValueError(f"Division {division_id} returned a null body.")
            
        print(f"Access confirmed for division: {response.body.name} ({division_id})")
        return response.body.to_dict()
        
    except ApiException as e:
        if e.status == 404:
            print(f"Error: Division {division_id} not found.")
        elif e.status == 403:
            print(f"Error: Access forbidden for division {division_id}. Check OAuth client permissions.")
        else:
            print(f"Unexpected error: {e.status} - {e.body}")
        raise

Step 2: Query Users Scoped to the Division

This is the core of the multi-tenant isolation. When calling the UsersApi, you must explicitly pass the division_id parameter. If you omit this, the API may return users from the default division or all accessible divisions, breaking tenant isolation.

The Genesys Cloud API uses pagination. To ensure you retrieve all users for a tenant, you must implement a loop that continues fetching until the nextPageUri is null.

from purecloud_platform_client import UsersApi
from typing import List, Dict, Any

def get_users_in_division(division_id: str) -> List[Dict[str, Any]]:
    """
    Retrieves all users belonging to a specific division.
    
    Args:
        division_id (str): The UUID of the target division.
        
    Returns:
        List[Dict[str, Any]]: A list of user objects.
    """
    users_api = UsersApi(pc)
    all_users = []
    
    # Initial query parameters
    # Endpoint: GET /api/v2/users
    # Query Params: divisionId, pageSize
    # Scope: user:read
    page_size = 100
    next_page_uri = None
    
    try:
        while True:
            # Fetch the current page of users
            # The division_id parameter scopes the result set strictly to this tenant
            response = users_api.get_users(
                division_id=division_id,
                page_size=page_size,
                page_token=next_page_uri
            )
            
            if response.body is None or response.body.entities is None:
                print(f"No users found in division {division_id}.")
                break
            
            # Append users to the list
            all_users.extend(response.body.entities)
            
            # Check for pagination
            next_page_uri = response.body.next_page_uri
            
            if not next_page_uri:
                break
                
        print(f"Successfully retrieved {len(all_users)} users from division {division_id}.")
        return all_users
        
    except ApiException as e:
        print(f"Error retrieving users: {e.status} - {e.body}")
        raise

Step 3: Process and Isolate Results

In a multi-tenant BPO scenario, you must never mix data from different divisions. After retrieval, validate that every user object contains the expected division_id. This acts as a secondary safety check to ensure the API response adhered to the scoping request.

def process_tenant_users(users: List[Dict[str, Any]], expected_division_id: str) -> None:
    """
    Processes the list of users and validates division isolation.
    
    Args:
        users (List[Dict[str, Any]]): The list of user objects.
        expected_division_id (str): The division ID that all users must belong to.
    """
    if not users:
        print("No users to process.")
        return

    print(f"\n--- Processing {len(users)} users for Division {expected_division_id} ---")
    
    for user in users:
        user_division = user.get('division', {}).get('id')
        
        # Safety Check: Ensure no cross-tenant data leakage
        if user_division != expected_division_id:
            print(f"WARNING: User {user.get('name')} ({user.get('id')}) belongs to division {user_division}, not {expected_division_id}.")
            continue
            
        # Example processing: Print user details
        print(f"User: {user.get('name')} | Email: {user.get('email')} | ID: {user.get('id')}")

# Example usage flow
if __name__ == "__main__":
    target_div = os.getenv("TARGET_DIVISION_ID")
    
    if not target_div:
        raise ValueError("TARGET_DIVISION_ID is not set in environment.")

    try:
        # Step 1: Validate Access
        validate_division_access(target_div)
        
        # Step 2: Get Users
        users = get_users_in_division(target_div)
        
        # Step 3: Process
        process_tenant_users(users, target_div)
        
    except Exception as e:
        print(f"Application failed: {e}")

Complete Working Example

Below is the full, copy-pasteable script. Save this as tenant_user_scoper.py. Ensure your .env file is in the same directory.

import os
import sys
from typing import List, Dict, Any

from dotenv import load_dotenv
from purecloud_platform_client import (
    PlatformClient,
    Configuration,
    DivisionsApi,
    UsersApi,
    ApiException
)

load_dotenv()

def get_platform_client() -> PlatformClient:
    """Initializes the Genesys Cloud Platform Client."""
    client_id = os.getenv("GENESYS_CLIENT_ID")
    client_secret = os.getenv("GENESYS_CLIENT_SECRET")
    region = os.getenv("GENESYS_REGION", "us-east-1")

    if not client_id or not client_secret:
        raise ValueError("GENESYS_CLIENT_ID and GENESYS_CLIENT_SECRET must be set in environment.")

    config = Configuration(
        host=f"https://{region}.pure.cloudapi.net",
        client_id=client_id,
        client_secret=client_secret
    )
    return PlatformClient(configuration=config)

def validate_division_access(pc: PlatformClient, division_id: str) -> dict:
    """Validates that the OAuth client can access the specified division."""
    divisions_api = DivisionsApi(pc)
    
    try:
        response = divisions_api.get_divisions_division_id(division_id)
        
        if response.body is None:
            raise ValueError(f"Division {division_id} returned a null body.")
            
        print(f"[OK] Access confirmed for division: {response.body.name} ({division_id})")
        return response.body.to_dict()
        
    except ApiException as e:
        if e.status == 404:
            print(f"[FAIL] Division {division_id} not found.")
        elif e.status == 403:
            print(f"[FAIL] Access forbidden for division {division_id}. Check OAuth client permissions.")
        else:
            print(f"[FAIL] Unexpected error: {e.status} - {e.body}")
        raise

def get_users_in_division(pc: PlatformClient, division_id: str) -> List[Dict[str, Any]]:
    """Retrieves all users belonging to a specific division with pagination."""
    users_api = UsersApi(pc)
    all_users = []
    
    page_size = 100
    next_page_uri = None
    
    try:
        while True:
            response = users_api.get_users(
                division_id=division_id,
                page_size=page_size,
                page_token=next_page_uri
            )
            
            if response.body is None or response.body.entities is None:
                print(f"[INFO] No users found in division {division_id}.")
                break
            
            all_users.extend(response.body.entities)
            next_page_uri = response.body.next_page_uri
            
            if not next_page_uri:
                break
                
        print(f"[OK] Successfully retrieved {len(all_users)} users from division {division_id}.")
        return all_users
        
    except ApiException as e:
        print(f"[FAIL] Error retrieving users: {e.status} - {e.body}")
        raise

def process_tenant_users(users: List[Dict[str, Any]], expected_division_id: str) -> None:
    """Processes the list of users and validates division isolation."""
    if not users:
        print("[INFO] No users to process.")
        return

    print(f"\n--- Processing {len(users)} users for Division {expected_division_id} ---")
    
    for user in users:
        user_division = user.get('division', {}).get('id')
        
        if user_division != expected_division_id:
            print(f"[WARN] User {user.get('name')} ({user.get('id')}) belongs to division {user_division}, not {expected_division_id}.")
            continue
            
        print(f"User: {user.get('name')} | Email: {user.get('email')} | ID: {user.get('id')}")

if __name__ == "__main__":
    target_div = os.getenv("TARGET_DIVISION_ID")
    
    if not target_div:
        print("[ERROR] TARGET_DIVISION_ID is not set in environment.")
        sys.exit(1)

    try:
        pc = get_platform_client()
        
        # Step 1: Validate Access
        validate_division_access(pc, target_div)
        
        # Step 2: Get Users
        users = get_users_in_division(pc, target_div)
        
        # Step 3: Process
        process_tenant_users(users, target_div)
        
    except Exception as e:
        print(f"[CRITICAL] Application failed: {e}")
        sys.exit(1)

Common Errors & Debugging

Error: 403 Forbidden

What causes it: The OAuth client does not have the user:read scope, or the client is not associated with the target division in the Genesys Cloud admin console.

How to fix it:

1. Go to the Genesys Cloud Admin Console.
2. Navigate to Admin > Platform > OAuth.
3. Select your client.
4. Ensure the scope user:read is checked.
5. Ensure the client is assigned to the correct Division(s) in the “Divisions” tab of the client settings.

Code showing the fix:
Verify the scope in your local configuration if you are managing scopes manually, but primarily this is an admin console fix. In code, you can catch this specifically:

except ApiException as e:
    if e.status == 403:
        print("Check OAuth Client Permissions: Does the client have 'user:read' and is it assigned to the target division?")

Error: 429 Too Many Requests

What causes it: You have exceeded the rate limit for the /api/v2/users endpoint. This is common when iterating over many divisions or large user bases.

How to fix it: Implement exponential backoff. The SDK does not automatically retry 429s for all operations, so you must handle it.

Code showing the fix:

import time

def get_users_with_retry(pc: PlatformClient, division_id: str, max_retries: int = 3) -> List[Dict[str, Any]]:
    users_api = UsersApi(pc)
    all_users = []
    page_size = 100
    next_page_uri = None
    
    attempt = 0
    while True:
        try:
            response = users_api.get_users(
                division_id=division_id,
                page_size=page_size,
                page_token=next_page_uri
            )
            
            if response.body is None or response.body.entities is None:
                break
            
            all_users.extend(response.body.entities)
            next_page_uri = response.body.next_page_uri
            
            if not next_page_uri:
                break
            attempt = 0 # Reset attempt on successful page fetch
                
        except ApiException as e:
            if e.status == 429:
                if attempt < max_retries:
                    wait_time = 2 ** attempt
                    print(f"Rate limit hit. Waiting {wait_time} seconds before retry...")
                    time.sleep(wait_time)
                    attempt += 1
                    continue
                else:
                    print("Max retries exceeded for rate limit.")
                    raise
            else:
                raise
    return all_users

Error: 404 Not Found

What causes it: The TARGET_DIVISION_ID provided in the .env file is invalid or the division has been deleted.

How to fix it: Verify the Division ID in the Genesys Cloud Admin Console under Admin > Organization > Divisions. Copy the UUID from the URL or the “Copy ID” button.

Official References

• Genesys Cloud Users API Documentation
• Genesys Cloud OAuth Scopes Reference
• Python SDK Documentation
• Division Scoping Guide