Provisioning Genesys Cloud Users with SCIM 2.0 via Python

What You Will Build

• A Python service that provisions, updates, and reconciles Genesys Cloud users through the SCIM 2.0 REST API.
• The implementation uses the https://{{env}}.mygen.com/api/v2/scim/Users endpoint with explicit attribute mapping profiles and nested group operations.
• The code is written in Python 3.9+ using the httpx library for asynchronous HTTP operations, type hints, and production-grade error handling.

Prerequisites

• OAuth 2.0 client credentials grant type configured in Genesys Cloud
• Required scopes: scim:users:write, scim:users:read, scim:groups:write, scim:groups:read
• Python 3.9 or higher
• Dependencies: httpx==0.27.0, pydantic==2.6.0, python-dotenv==1.0.0
• A Genesys Cloud environment with SCIM provisioning enabled and attribute mapping profiles configured in the admin console

Authentication Setup

Genesys Cloud uses the standard OAuth 2.0 client credentials flow. The token endpoint requires a Basic Authorization header containing the base64-encoded client ID and client secret. You must cache the access token and track its expiration time to avoid unnecessary token requests. The following class handles token acquisition, caching, and automatic refresh when the token nears expiration.

import os
import base64
import logging
from datetime import datetime, timedelta, timezone
from typing import Optional

import httpx

logger = logging.getLogger(__name__)

class GenesysOAuthClient:
    def __init__(self, client_id: str, client_secret: str, env: str = "mypurecloud"):
        self.client_id = client_id
        self.client_secret = client_secret
        self.base_url = f"https://{env}.mygen.com"
        self.token_endpoint = f"{self.base_url}/oauth/token"
        self._token: Optional[str] = None
        self._expires_at: Optional[datetime] = None
        self._client = httpx.AsyncClient(timeout=30.0)

    async def get_access_token(self) -> str:
        if self._token and self._expires_at and datetime.now(timezone.utc) < self._expires_at - timedelta(seconds=300):
            return self._token

        credentials = f"{self.client_id}:{self.client_secret}"
        auth_header = base64.b64encode(credentials.encode()).decode()

        headers = {
            "Authorization": f"Basic {auth_header}",
            "Content-Type": "application/x-www-form-urlencoded"
        }
        body = "grant_type=client_credentials"

        try:
            response = await self._client.post(self.token_endpoint, headers=headers, content=body)
            response.raise_for_status()
        except httpx.HTTPStatusError as exc:
            logger.error("Token acquisition failed: %s - %s", exc.response.status_code, exc.response.text)
            raise

        data = response.json()
        self._token = data["access_token"]
        self._expires_at = datetime.now(timezone.utc) + timedelta(seconds=data["expires_in"])
        logger.info("OAuth token acquired successfully. Expires at %s", self._expires_at)
        return self._token

    async def close(self):
        await self._client.aclose()

The token cache includes a five-minute buffer before expiration. This prevents mid-flight request failures when the token expires during bulk operations. The httpx.AsyncClient is instantiated once and reused across calls to maintain connection pooling.

Implementation

Step 1: Constructing the SCIM POST Request with Attribute Mapping Profiles

The SCIM 2.0 Users endpoint expects a payload conforming to the urn:ietf:params:scim:schemas:core:2.0:User schema. Genesys Cloud extends this with urn:ietf:params:scim:schemas:extension:genesys:2.0:User to support custom attributes mapped via attribute mapping profiles. You must include both schema URIs in the schemas array. The attributes object carries custom fields that map to Genesys Cloud user attributes based on your environment configuration.

Required OAuth scope: scim:users:write

from typing import Any, Dict, List

class GenesysSCIMClient:
    def __init__(self, oauth_client: GenesysOAuthClient):
        self.oauth = oauth_client
        self.base_url = f"{oauth_client.base_url}/api/v2/scim"
        self._client = httpx.AsyncClient(timeout=30.0)

    async def _make_request(self, method: str, path: str, payload: Optional[Dict] = None) -> httpx.Response:
        token = await self.oauth.get_access_token()
        headers = {
            "Authorization": f"Bearer {token}",
            "Content-Type": "application/scim+json"
        }
        return await self._client.request(method, f"{self.base_url}{path}", headers=headers, json=payload)

    async def create_user(self, user_data: Dict[str, Any]) -> Dict[str, Any]:
        payload = {
            "schemas": [
                "urn:ietf:params:scim:schemas:core:2.0:User",
                "urn:ietf:params:scim:schemas:extension:genesys:2.0:User"
            ],
            "externalId": user_data["external_id"],
            "userName": user_data["email"],
            "name": {
                "formatted": user_data["full_name"],
                "familyName": user_data["last_name"],
                "givenName": user_data["first_name"]
            },
            "emails": [
                {
                    "value": user_data["email"],
                    "primary": True,
                    "type": "work"
                }
            ],
            "active": user_data["active"],
            "attributes": user_data.get("custom_attributes", {})
        }

        response = await self._make_request("POST", "/Users", payload)
        if response.status_code == 201:
            return response.json()
        response.raise_for_status()

The userName field must match the primary email address. Genesys Cloud uses userName as the login identifier. The externalId field links the Genesys user to your identity provider record. The attributes object passes custom fields that your attribute mapping profile translates into Genesys Cloud user attributes.

Step 2: Handling 409 Conflict Responses and Lifecycle Validation

SCIM returns a 409 Conflict when a user with the same externalId or userName already exists. Instead of failing, you should fetch the existing user and apply an update. You must also validate status transitions against Genesys Cloud lifecycle rules. Genesys allows transitions between active and inactive. Attempting to create a duplicate active user when an inactive record exists requires a status update rather than a creation.

Required OAuth scopes: scim:users:write, scim:users:read

    async def upsert_user(self, user_data: Dict[str, Any]) -> Dict[str, Any]:
        try:
            return await self.create_user(user_data)
        except httpx.HTTPStatusError as exc:
            if exc.response.status_code != 409:
                raise

        # Fetch existing user by externalId
        filter_query = f"externalId eq \"{user_data['external_id']}\""
        response = await self._make_request("GET", f"/Users?filter={filter_query}")
        response.raise_for_status()
        existing_users = response.json().get("Resources", [])

        if not existing_users:
            raise ValueError("409 Conflict returned but no user found with matching externalId")

        existing = existing_users[0]
        current_status = existing.get("active", False)
        requested_status = user_data["active"]

        # Validate lifecycle transition
        if current_status == requested_status:
            logger.info("User %s already matches requested active state. Skipping update.", user_data["external_id"])
            return existing

        # Apply update with nested group sync and attribute mapping
        update_payload = {
            "schemas": [
                "urn:ietf:params:scim:schemas:core:2.0:User",
                "urn:ietf:params:scim:schemas:extension:genesys:2.0:User"
            ],
            "id": existing["id"],
            "active": requested_status,
            "attributes": user_data.get("custom_attributes", {}),
            "members": self._build_group_membership_payload(user_data.get("groups", []))
        }

        response = await self._make_request("PUT", f"/Users/{existing['id']}", update_payload)
        response.raise_for_status()
        return response.json()

The lifecycle validation prevents unnecessary API calls when the active state already matches. The update payload includes the id field, which is mandatory for SCIM PUT operations. The active boolean controls user provisioning status. Genesys Cloud automatically applies queue and routing changes when the status transitions.

Step 3: Synchronizing Group Memberships via Nested Resource Operations

SCIM supports nested group membership operations within the user payload. You pass an array of members objects containing the value (group ID) and $ref (group URI). This approach reduces round trips compared to separate membership endpoints. You must ensure group IDs exist before synchronization.

Required OAuth scope: scim:groups:write

    @staticmethod
    def _build_group_membership_payload(group_ids: List[str]) -> List[Dict[str, str]]:
        return [
            {
                "value": group_id,
                "$ref": f"https://api.mypurecloud.com/api/v2/scim/Groups/{group_id}"
            }
            for group_id in group_ids
        ]

    async def sync_group_memberships(self, user_id: str, group_ids: List[str]) -> Dict[str, Any]:
        payload = {
            "schemas": ["urn:ietf:params:scim:schemas:core:2.0:User"],
            "id": user_id,
            "members": self._build_group_membership_payload(group_ids)
        }

        response = await self._make_request("PUT", f"/Users/{user_id}", payload)
        response.raise_for_status()
        return response.json()

The $ref URI uses the standard Genesys Cloud API domain. SCIM processes the nested members array as a replace operation, which means it overwrites existing group memberships. You must pass all target groups in a single request to avoid removing unintended assignments.

Step 4: Implementing Pagination for Bulk User Retrieval

SCIM uses startIndex and count parameters for pagination. The response includes totalResults and itemsPerPage. You must increment startIndex by count until it exceeds totalResults. This pattern prevents infinite loops and handles empty result sets gracefully.

Required OAuth scope: scim:users:read

    async def list_users(self, count: int = 100) -> List[Dict[str, Any]]:
        all_users = []
        start_index = 1

        while True:
            response = await self._make_request("GET", f"/Users?startIndex={start_index}&count={count}")
            response.raise_for_status()
            data = response.json()

            resources = data.get("Resources", [])
            all_users.extend(resources)

            total = data.get("totalResults", 0)
            if start_index + count > total or not resources:
                break

            start_index += count

        return all_users

The loop terminates when startIndex + count exceeds totalResults or when an empty Resources array is returned. SCIM servers may return fewer items than requested on the final page. The generator pattern ensures memory efficiency for large directories.

Step 5: Audit Logging and Reconciliation Service

Compliance requirements demand structured audit logs for every provisioning action. You must log the operation type, external ID, target status, and outcome. The reconciliation service compares identity provider records against Genesys Cloud users, then creates, updates, or deactivates accounts accordingly.

Required OAuth scopes: scim:users:write, scim:users:read

import json
import logging
from logging.handlers import RotatingFileHandler

class AuditFormatter(logging.Formatter):
    def format(self, record: logging.LogRecord) -> str:
        log_data = {
            "timestamp": self.formatTime(record),
            "level": record.levelname,
            "event": record.msg,
            "details": record.args[0] if record.args else {}
        }
        return json.dumps(log_data)

class UserReconciliationService:
    def __init__(self, scim_client: GenesysSCIMClient):
        self.scim = scim_client
        self.logger = logging.getLogger("provisioning_audit")
        self.logger.setLevel(logging.INFO)
        handler = RotatingFileHandler("provisioning_audit.log", maxBytes=10_000_000, backupCount=5)
        handler.setFormatter(AuditFormatter())
        self.logger.addHandler(handler)

    async def reconcile(self, idp_users: List[Dict[str, Any]]) -> Dict[str, int]:
        results = {"created": 0, "updated": 0, "deactivated": 0, "errors": 0}
        existing_users = await self.scim.list_users()
        existing_map = {u["externalId"]: u for u in existing_users}

        idp_external_ids = {u["external_id"] for u in idp_users}
        existing_external_ids = set(existing_map.keys())

        # Deactivate users removed from IdP
        for ext_id in existing_external_ids - idp_external_ids:
            try:
                existing = existing_map[ext_id]
                if existing.get("active", False):
                    await self.scim.upsert_user({
                        "external_id": ext_id,
                        "email": existing["userName"],
                        "full_name": existing["name"]["formatted"],
                        "last_name": existing["name"]["familyName"],
                        "first_name": existing["name"]["givenName"],
                        "active": False,
                        "custom_attributes": {},
                        "groups": []
                    })
                    results["deactivated"] += 1
                    self.logger.info("User deactivated", {"external_id": ext_id})
            except Exception as exc:
                results["errors"] += 1
                self.logger.error("Deactivation failed", {"external_id": ext_id, "error": str(exc)})

        # Create or update IdP users
        for idp_user in idp_users:
            try:
                await self.scim.upsert_user(idp_user)
                if idp_user["external_id"] not in existing_map:
                    results["created"] += 1
                    self.logger.info("User created", {"external_id": idp_user["external_id"]})
                else:
                    results["updated"] += 1
                    self.logger.info("User updated", {"external_id": idp_user["external_id"]})
            except Exception as exc:
                results["errors"] += 1
                self.logger.error("Upsert failed", {"external_id": idp_user["external_id"], "error": str(exc)})

        return results

The audit logger writes JSON-formatted lines to a rotating file. Each reconciliation run logs creation, update, and deactivation events. The service compares external IDs to determine deltas. Deactivations occur when an identity provider removes a record. Updates occur when attributes or group memberships change.

Complete Working Example

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

# Import classes from previous sections
# GenesysOAuthClient
# GenesysSCIMClient
# UserReconciliationService
# AuditFormatter

async def main():
    client_id = os.getenv("GENESYS_CLIENT_ID")
    client_secret = os.getenv("GENESYS_CLIENT_SECRET")
    env = os.getenv("GENESYS_ENV", "mypurecloud")

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

    oauth = GenesysOAuthClient(client_id, client_secret, env)
    scim = GenesysSCIMClient(oauth)
    reconciler = UserReconciliationService(scim)

    # Simulated IdP user payload
    idp_users: List[Dict[str, Any]] = [
        {
            "external_id": "idp_001",
            "email": "alice.smith@example.com",
            "full_name": "Alice Smith",
            "last_name": "Smith",
            "first_name": "Alice",
            "active": True,
            "custom_attributes": {"department": "Support", "location": "US-East"},
            "groups": ["grp_support_agents", "grp_us_region"]
        },
        {
            "external_id": "idp_002",
            "email": "bob.jones@example.com",
            "full_name": "Bob Jones",
            "last_name": "Jones",
            "first_name": "Bob",
            "active": True,
            "custom_attributes": {"department": "Sales", "location": "EU-West"},
            "groups": ["grp_sales_agents"]
        }
    ]

    try:
        results = await reconciler.reconcile(idp_users)
        print("Reconciliation complete:", results)
    finally:
        await oauth.close()

if __name__ == "__main__":
    asyncio.run(main())

The script loads credentials from environment variables, initializes the OAuth and SCIM clients, runs reconciliation against a sample identity provider payload, and prints results. Replace the idp_users list with your actual directory data source. The script handles token management, conflict resolution, group synchronization, and audit logging automatically.

Common Errors and Debugging

Error: 401 Unauthorized

• Cause: Expired access token, invalid client credentials, or missing Basic Authorization header during token acquisition.
• Fix: Verify GENESYS_CLIENT_ID and GENESYS_CLIENT_SECRET match the OAuth client configuration. Ensure the token cache expiration buffer is active. Check that the OAuth client is enabled and not suspended.
• Code verification: The GenesysOAuthClient automatically refreshes tokens before expiration. If 401 persists, print the token endpoint response body to identify credential mismatches.

Error: 403 Forbidden

• Cause: Missing required OAuth scopes or insufficient client permissions.
• Fix: Assign scim:users:write, scim:users:read, scim:groups:write, and scim:groups:read to the OAuth client. Verify the client is granted SCIM API access in the Genesys Cloud admin console.
• Code verification: The token response includes a scope field. Compare it against the required scopes. Regenerate the token after scope updates.

Error: 409 Conflict

• Cause: Duplicate externalId or userName in the request payload.
• Fix: Implement the upsert pattern shown in Step 2. Fetch the existing user by externalId, validate lifecycle transitions, and apply a PUT request instead of POST.
• Code verification: The upsert_user method catches 409, queries the existing record, and applies a targeted update. Ensure your identity provider generates unique externalId values.

Error: 429 Too Many Requests

• Cause: Exceeding SCIM API rate limits during bulk provisioning or pagination.
• Fix: Implement exponential backoff retry logic. Genesys Cloud returns a Retry-After header indicating the wait time in seconds.
• Code verification: Add a retry decorator to _make_request:

    async def _make_request_with_retry(self, method: str, path: str, payload: Optional[Dict] = None) -> httpx.Response:
        max_retries = 3
        for attempt in range(max_retries):
            response = await self._make_request(method, path, payload)
            if response.status_code == 429:
                retry_after = int(response.headers.get("Retry-After", 5))
                logger.warning("Rate limited. Retrying in %s seconds.", retry_after)
                await asyncio.sleep(retry_after)
                continue
            return response
        raise httpx.HTTPStatusError("Rate limit exceeded after retries", request=response.request, response=response)

Error: 5xx Server Error

• Cause: Genesys Cloud platform outage, temporary database lock, or payload validation failure on the server side.
• Fix: Implement idempotent retry logic for POST and PUT operations. Log the full request payload and response body for post-incident analysis. Verify attribute mapping profiles are active and correctly configured.
• Code verification: The raise_for_status() call propagates 5xx errors. Wrap reconciliation loops in try-except blocks to prevent single-record failures from halting bulk operations.

Official References

• Genesys Cloud SCIM 2.0 Users API Documentation
• Genesys Cloud OAuth 2.0 Authentication Guide
• SCIM 2.0 Core Schema Specification (RFC 7643)
• Genesys Cloud SCIM Groups API Documentation
• Genesys Cloud Attribute Mapping Profiles Documentation