Resolving INVALID_VALUE Errors When Creating Genesys Cloud Outbound Contact Lists

What You Will Build

• A Python script that successfully creates a new Outbound Contact List in Genesys Cloud by correctly structuring the JSON payload and handling required fields.
• This tutorial uses the Genesys Cloud Platform API v2 (/api/v2/outbound/contactlists).
• The implementation uses Python 3.10+ with the requests library and the official genesys-cloud-sdk-python.

Prerequisites

• OAuth Client: A Genesys Cloud OAuth client with the outbound:contactlist:create scope. You also need outbound:contactlist:view if you intend to verify the creation immediately.
• SDK Version: genesys-cloud-sdk-python v2.0.0 or later.
• Runtime: Python 3.10 or higher.
• Dependencies: requests, genesys-cloud-sdk-python.

Install the dependencies via pip:

pip install requests genesys-cloud-sdk-python

Authentication Setup

Genesys Cloud uses OAuth 2.0 Client Credentials flow for server-to-server integrations. You must obtain an access token before making any API calls.

Step 1: Configure Environment Variables

Store your credentials securely. Do not hardcode them.

export GENESYS_CLOUD_CLIENT_ID="your_client_id"
export GENESYS_CLOUD_CLIENT_SECRET="your_client_secret"
export GENESYS_CLOUD_REGION="mypurecloud.com" # e.g., us-east-1.mypurecloud.com

Step 2: Token Acquisition Function

This function handles the POST request to the token endpoint and returns the access token. It includes basic error handling for 400 (invalid credentials) and 401 (unauthorized) responses.

import os
import requests
from typing import Optional

def get_access_token(client_id: str, client_secret: str, region: str) -> Optional[str]:
    """
    Retrieves an OAuth access token from Genesys Cloud.
    
    Args:
        client_id: The OAuth client ID.
        client_secret: The OAuth client secret.
        region: The Genesys Cloud region domain.
        
    Returns:
        The access token string or None if authentication fails.
    """
    token_url = f"https://{region}/oauth/token"
    payload = {
        "grant_type": "client_credentials"
    }
    
    try:
        response = requests.post(
            token_url,
            auth=(client_id, client_secret),
            data=payload,
            headers={"Content-Type": "application/x-www-form-urlencoded"}
        )
        
        if response.status_code == 200:
            return response.json().get("access_token")
        else:
            print(f"Authentication failed with status {response.status_code}: {response.text}")
            return None
            
    except requests.exceptions.RequestException as e:
        print(f"Network error during authentication: {e}")
        return None

Implementation

The INVALID_VALUE error during POST /api/v2/outbound/contactlists typically occurs due to one of three reasons:

1. Missing required fields (name, type, columns).
2. Invalid data types within the columns array (e.g., sending a string for type when fieldType is expected, or mismatched columnType).
3. Incorrect structure of the columns object (missing name, type, or fieldType).

Step 1: Define the Correct Payload Structure

The Genesys Cloud API requires a specific schema for the columns array. Each column must have:

• name: The identifier for the column (e.g., “FirstName”).
• type: The data type of the column (e.g., “String”, “Number”, “Date”, “Boolean”).
• fieldType: The usage type of the column (e.g., “FreeForm”, “Address”, “Email”, “Phone”).

Critical Note: The type field is case-sensitive. “string” will fail. It must be “String”.

Here is the correct JSON structure:

{
  "name": "Marketing Campaign Q4 Contacts",
  "type": "List",
  "columns": [
    {
      "name": "FirstName",
      "type": "String",
      "fieldType": "FreeForm"
    },
    {
      "name": "LastName",
      "type": "String",
      "fieldType": "FreeForm"
    },
    {
      "name": "EmailAddress",
      "type": "String",
      "fieldType": "Email"
    },
    {
      "name": "PhoneNumber",
      "type": "String",
      "fieldType": "Phone"
    },
    {
      "name": "CreatedDate",
      "type": "Date",
      "fieldType": "FreeForm"
    }
  ]
}

Step 2: Implement the Contact List Creation Logic

We will use the genesys-cloud-sdk-python for this step, as it handles serialization and error parsing more robustly than raw requests. However, we will also show the raw requests approach for debugging purposes.

Option A: Using the Official SDK

from genesyscloud.platform_client_v2 import PlatformClient
from genesyscloud.outbound.api import OutboundApi
from genesyscloud.outbound.model import ContactList
from genesyscloud.outbound.model import Column
import sys

def create_contact_list_sdk(platform_client: PlatformClient, list_name: str) -> Optional[str]:
    """
    Creates a new Outbound Contact List using the Genesys Cloud SDK.
    
    Args:
        platform_client: An initialized PlatformClient instance.
        list_name: The name of the new contact list.
        
    Returns:
        The ID of the created contact list or None if creation fails.
    """
    outbound_api = OutboundApi(platform_client)
    
    # Define columns with correct types and field types
    columns = [
        Column(name="FirstName", type="String", field_type="FreeForm"),
        Column(name="LastName", type="String", field_type="FreeForm"),
        Column(name="Email", type="String", field_type="Email"),
        Column(name="Phone", type="String", field_type="Phone")
    ]
    
    # Create the ContactList object
    contact_list_body = ContactList(
        name=list_name,
        type="List", # Must be "List" for standard contact lists
        columns=columns
    )
    
    try:
        # Post the contact list
        api_response = outbound_api.post_outbound_contactlists(body=contact_list_body)
        
        if api_response is not None and api_response.id is not None:
            print(f"Successfully created contact list with ID: {api_response.id}")
            return api_response.id
        else:
            print("Creation failed: No ID returned in response.")
            return None
            
    except Exception as e:
        # The SDK raises an ApiException for non-2xx responses
        print(f"API Exception occurred: {e}")
        if hasattr(e, 'body'):
            print(f"Response Body: {e.body}")
        return None

Option B: Using Raw Requests (For Debugging INVALID_VALUE)

If you prefer raw HTTP or need to debug the exact payload being sent, use this method. This helps identify if the SDK is serializing the object incorrectly.

import json
import requests
from typing import Optional, Dict, Any

def create_contact_list_raw(access_token: str, region: str, list_name: str) -> Optional[str]:
    """
    Creates a new Outbound Contact List using raw HTTP requests.
    
    Args:
        access_token: The OAuth access token.
        region: The Genesys Cloud region domain.
        list_name: The name of the new contact list.
        
    Returns:
        The ID of the created contact list or None if creation fails.
    """
    url = f"https://{region}/api/v2/outbound/contactlists"
    
    # Define the payload exactly as the API expects
    payload: Dict[str, Any] = {
        "name": list_name,
        "type": "List",
        "columns": [
            {
                "name": "FirstName",
                "type": "String",
                "fieldType": "FreeForm"
            },
            {
                "name": "LastName",
                "type": "String",
                "fieldType": "FreeForm"
            },
            {
                "name": "Email",
                "type": "String",
                "fieldType": "Email"
            },
            {
                "name": "Phone",
                "type": "String",
                "fieldType": "Phone"
            }
        ]
    }
    
    headers = {
        "Authorization": f"Bearer {access_token}",
        "Content-Type": "application/json",
        "Accept": "application/json"
    }
    
    try:
        response = requests.post(url, json=payload, headers=headers)
        
        if response.status_code == 201:
            data = response.json()
            print(f"Successfully created contact list with ID: {data.get('id')}")
            return data.get("id")
        elif response.status_code == 400:
            print(f"Bad Request (400). Check payload structure.")
            print(f"Response Body: {response.text}")
            return None
        elif response.status_code == 401:
            print("Unauthorized (401). Token may be expired or invalid.")
            return None
        elif response.status_code == 403:
            print("Forbidden (403). Check OAuth scopes.")
            return None
        else:
            print(f"Unexpected status code: {response.status_code}")
            print(f"Response Body: {response.text}")
            return None
            
    except requests.exceptions.RequestException as e:
        print(f"Network error: {e}")
        return None

Step 3: Verify the Creation

After creating the list, it is good practice to retrieve it to confirm the columns were set correctly.

def verify_contact_list(platform_client: PlatformClient, contact_list_id: str) -> None:
    """
    Retrieves and prints details of a created contact list.
    """
    outbound_api = OutboundApi(platform_client)
    
    try:
        api_response = outbound_api.get_outbound_contactlist(contact_list_id=contact_list_id)
        print(f"Verification: Contact List '{api_response.name}' has {len(api_response.columns)} columns.")
        for col in api_response.columns:
            print(f"  - {col.name}: {col.type} ({col.field_type})")
    except Exception as e:
        print(f"Failed to verify contact list: {e}")

Complete Working Example

This script combines authentication, creation, and verification into a single runnable module.

import os
import sys
import requests
from typing import Optional

# Genesys Cloud SDK Imports
from genesyscloud.platform_client_v2 import PlatformClient
from genesyscloud.outbound.api import OutboundApi
from genesyscloud.outbound.model import ContactList
from genesyscloud.outbound.model import Column

def get_access_token(client_id: str, client_secret: str, region: str) -> Optional[str]:
    """Retrieves an OAuth access token from Genesys Cloud."""
    token_url = f"https://{region}/oauth/token"
    payload = {"grant_type": "client_credentials"}
    
    try:
        response = requests.post(
            token_url,
            auth=(client_id, client_secret),
            data=payload,
            headers={"Content-Type": "application/x-www-form-urlencoded"}
        )
        if response.status_code == 200:
            return response.json().get("access_token")
        else:
            print(f"Authentication failed: {response.text}")
            return None
    except requests.exceptions.RequestException as e:
        print(f"Network error: {e}")
        return None

def main():
    # 1. Load Configuration
    client_id = os.getenv("GENESYS_CLOUD_CLIENT_ID")
    client_secret = os.getenv("GENESYS_CLOUD_CLIENT_SECRET")
    region = os.getenv("GENESYS_CLOUD_REGION", "mypurecloud.com")
    
    if not client_id or not client_secret:
        print("Error: GENESYS_CLOUD_CLIENT_ID and GENESYS_CLOUD_CLIENT_SECRET environment variables are required.")
        sys.exit(1)

    # 2. Authenticate
    access_token = get_access_token(client_id, client_secret, region)
    if not access_token:
        print("Failed to obtain access token.")
        sys.exit(1)

    # 3. Initialize SDK
    platform_client = PlatformClient()
    platform_client.set_access_token(access_token)
    platform_client.set_base_url(f"https://{region}")

    # 4. Create Contact List
    list_name = "Test Contact List via SDK"
    
    outbound_api = OutboundApi(platform_client)
    
    # Define columns
    columns = [
        Column(name="FirstName", type="String", field_type="FreeForm"),
        Column(name="LastName", type="String", field_type="FreeForm"),
        Column(name="Email", type="String", field_type="Email"),
        Column(name="Phone", type="String", field_type="Phone")
    ]
    
    contact_list_body = ContactList(
        name=list_name,
        type="List",
        columns=columns
    )
    
    try:
        api_response = outbound_api.post_outbound_contactlists(body=contact_list_body)
        contact_list_id = api_response.id
        print(f"Successfully created contact list with ID: {contact_list_id}")
        
        # 5. Verify Creation
        verify_response = outbound_api.get_outbound_contactlist(contact_list_id=contact_list_id)
        print(f"Verified: List '{verify_response.name}' created with {len(verify_response.columns)} columns.")
        
    except Exception as e:
        print(f"Error creating contact list: {e}")
        if hasattr(e, 'body'):
            print(f"API Error Details: {e.body}")
        sys.exit(1)

if __name__ == "__main__":
    main()

Common Errors & Debugging

Error: 400 Bad Request - INVALID_VALUE

Cause: The payload structure does not match the API schema. This is the most common error when creating contact lists.

How to Fix:

1. Check the type field in each column. It must be one of: String, Number, Date, Boolean. Note the capitalization.
2. Check the fieldType field. It must be one of: FreeForm, Address, City, State, Zip, Country, Email, Phone, URL.
3. Ensure the columns array is not empty. A contact list must have at least one column.
4. Ensure the name field of the contact list is unique within your organization.

Debugging Code:

# If using raw requests, print the exact payload being sent
import json
print("Payload being sent:")
print(json.dumps(payload, indent=2))

Error: 403 Forbidden

Cause: The OAuth client lacks the required scope.

How to Fix:
Ensure your OAuth client has the outbound:contactlist:create scope. You can verify this in the Genesys Cloud Admin UI under Organization Settings > OAuth Clients.

Error: 429 Too Many Requests

Cause: You have exceeded the rate limit for the Outbound API.

How to Fix:
Implement exponential backoff. The response header Retry-After indicates how many seconds to wait.

import time

def post_with_retry(url, headers, payload, max_retries=3):
    for attempt in range(max_retries):
        response = requests.post(url, headers=headers, json=payload)
        if response.status_code == 429:
            retry_after = int(response.headers.get('Retry-After', 5))
            print(f"Rate limited. Waiting {retry_after} seconds...")
            time.sleep(retry_after)
        else:
            return response
    return response

Official References

• Genesys Cloud Outbound Contact List API Documentation
• Genesys Cloud Python SDK Reference
• OAuth 2.0 Client Credentials Flow