Passing CRM Customer ID via Genesys Cloud Web Messaging SDK

What You Will Build

• You will implement a JavaScript function that passes a specific CRM Customer ID into the Genesys Cloud Web Messaging SDK startChat method.
• This implementation uses the genesyscloud-webrtc library to inject custom attributes into the session metadata before the chat session is established.
• The tutorial uses vanilla JavaScript and the modern Web Messaging SDK v3, ensuring compatibility with current frontend frameworks.

Prerequisites

• Genesys Cloud Account: An active account with Web Messaging enabled.
• Organization ID: Your Genesys Cloud organization ID (found in Admin → Settings → Organization).
• Deployment ID: The Deployment ID for your Web Messaging deployment (found in Admin → Messaging → Deployments).
• SDK Version: genesyscloud-webrtc v3.x or higher.
• Runtime Environment: A modern web browser or Node.js environment with a DOM simulation if testing headlessly.
• Dependencies: None beyond the Genesys Cloud Web Messaging SDK.

Authentication Setup

Web Messaging SDK authentication is handled differently from the REST API. The SDK uses a Deployment ID and Organization ID to establish a WebSocket connection. No OAuth tokens are required for the client-side chat session itself, as the security context is managed by the deployment configuration. However, the attributes you pass (like the CRM ID) must be validated by the deployment rules or downstream flows.

Ensure your deployment is configured to accept custom attributes. In the Genesys Cloud Admin console, navigate to Messaging > Deployments > [Your Deployment] > Attributes. Ensure that the attribute key you intend to use (e.g., crmCustomerId) is whitelisted or allowed by the deployment’s attribute policy.

Implementation

Step 1: Initialize the Web Messaging SDK

First, you must import and initialize the SDK. The initialization object requires the orgID and deploymentID. You will also configure the onSessionStatus callback to monitor the lifecycle of the chat session.

import { WebMessaging } from '@genesyscloud/webrtc';

// Configuration constants
const ORG_ID = 'your-organization-id';
const DEPLOYMENT_ID = 'your-deployment-id';

// Initialize the WebMessaging instance
const webMessaging = new WebMessaging({
  orgID: ORG_ID,
  deploymentID: DEPLOYMENT_ID,
  // Optional: Configure logging for debugging
  logLevel: 'debug'
});

// Monitor session status for debugging and UI updates
webMessaging.onSessionStatus((status) => {
  console.log('Session Status:', status);
  if (status === 'connected') {
    console.log('Chat session established successfully.');
  } else if (status === 'error') {
    console.error('Chat session error occurred.');
  }
});

Expected Response:
The initialization does not return a response. It sets up the internal state. The onSessionStatus callback will fire when the WebSocket connects to the Genesys Cloud infrastructure.

Error Handling:
If the ORG_ID or DEPLOYMENT_ID is invalid, the SDK will not throw an immediate error during initialization. The error will manifest when startChat is called, returning a status of error or unauthorized in the onSessionStatus callback.

Step 2: Construct the startChat Payload with CRM ID

The core of this tutorial is passing the CRM Customer ID. In the Genesys Cloud Web Messaging SDK, custom data is passed via the attributes object within the startChat method. These attributes become part of the conversation metadata and are accessible in Genesys Cloud flows, analytics, and integrations.

You must define the structure of the attributes. Genesys Cloud supports nested JSON objects, but for simple key-value pairs like a CRM ID, a flat structure is often sufficient.

/**
 * Starts a chat session with a specific CRM Customer ID.
 * 
 * @param {string} crmCustomerId - The unique identifier from the external CRM system.
 * @param {string} customerName - Optional: The name of the customer for context.
 * @returns {Promise<void>}
 */
async function startChatWithCrmId(crmCustomerId, customerName) {
  if (!crmCustomerId) {
    throw new Error('CRM Customer ID is required to start the chat.');
  }

  // Define the attributes payload
  // Note: Attribute keys should be camelCase to match Genesys Cloud conventions
  const sessionAttributes = {
    // Custom attribute for CRM ID
    crmCustomerId: crmCustomerId,
    
    // Optional: Additional context
    customerName: customerName || 'Anonymous User',
    
    // Optional: Source of the request (e.g., Web, Mobile, Portal)
    sourceChannel: 'WebPortal'
  };

  try {
    // Call startChat with the attributes
    // The 'attributes' property is part of the session configuration
    await webMessaging.startChat({
      attributes: sessionAttributes
    });
    
    console.log('Chat started with CRM ID:', crmCustomerId);
  } catch (error) {
    console.error('Failed to start chat:', error);
    throw error;
  }
}

Explanation of Non-Obvious Parameters:

• attributes: This is a JSON object. Keys must be strings. Values can be strings, numbers, booleans, or nested objects.
• Key Naming: Use camelCase for attribute keys (e.g., crmCustomerId). Genesys Cloud flows and data actions reference these keys exactly as defined. If you use CRM_Customer_ID in the SDK, you must use CRM_Customer_ID in the flow.
• Data Validation: The SDK does not validate the content of the attributes. It only validates the structure. Ensure crmCustomerId is a valid string or number before passing it.

Edge Cases:

• Large Attributes: If the attributes object exceeds the WebSocket message limit, the startChat call may fail. Keep attributes concise.
• Reserved Keys: Avoid using keys that conflict with internal Genesys Cloud attributes (e.g., conversationId, participantId). Using reserved keys may cause unexpected behavior or be ignored by the platform.

Step 3: Verify Attribute Persistence in the Flow

Passing the attribute is only half the battle. You must ensure the attribute is available in the Genesys Cloud routing flow. This step demonstrates how to verify that the attribute is correctly received and can be used for routing or data actions.

While this step is not code executed in the browser, it is critical for the integration to work. In your Genesys Cloud Flow, add a Data Action to log or set a variable from the incoming attributes.

1. Open your Flow in the Flow Builder.
2. Add a Data Action block after the Start block.
3. Set the Action Type to Set.
4. Set the Variable to crmId.
5. Set the Value to {{attributes.crmCustomerId}}.

If the attribute is passed correctly, this variable will be populated. If it is null or undefined, the attribute was not passed or was blocked by deployment policies.

You can also verify this by checking the conversation transcript in the Admin console. Navigate to Messaging > Transcripts, find the conversation, and inspect the Metadata or Attributes section. The crmCustomerId should be listed there.

Complete Working Example

Below is a complete, copy-pasteable HTML file that demonstrates the integration. This example includes the SDK initialization, the function to start the chat with the CRM ID, and a simple UI to trigger the action.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Genesys Cloud Web Messaging with CRM ID</title>
    <style>
        body { font-family: Arial, sans-serif; padding: 20px; }
        button { padding: 10px 20px; cursor: pointer; }
        #status { margin-top: 20px; color: blue; }
        #error { margin-top: 20px; color: red; }
    </style>
</head>
<body>
    <h1>Web Messaging CRM Integration</h1>
    <div>
        <label for="crmId">CRM Customer ID:</label>
        <input type="text" id="crmId" placeholder="Enter CRM ID (e.g., CUST-12345)">
    </div>
    <div>
        <button id="startChatBtn">Start Chat with CRM ID</button>
    </div>
    <div id="status"></div>
    <div id="error"></div>

    <!-- Load the Genesys Cloud Web Messaging SDK from CDN -->
    <script src="https://cdn.genesiscloud.com/webrtc/v3/genesyscloud-webrtc.min.js"></script>
    
    <script>
        // Configuration
        const ORG_ID = 'your-organization-id'; // Replace with your Org ID
        const DEPLOYMENT_ID = 'your-deployment-id'; // Replace with your Deployment ID

        // Initialize Web Messaging
        const webMessaging = new GenesysCloudWebRTC.WebMessaging({
            orgID: ORG_ID,
            deploymentID: DEPLOYMENT_ID,
            logLevel: 'debug'
        });

        // UI Elements
        const startChatBtn = document.getElementById('startChatBtn');
        const crmIdInput = document.getElementById('crmId');
        const statusDiv = document.getElementById('status');
        const errorDiv = document.getElementById('error');

        // Session Status Handler
        webMessaging.onSessionStatus((status) => {
            statusDiv.textContent = `Session Status: ${status}`;
            if (status === 'connected') {
                startChatBtn.textContent = 'Chat Active';
                startChatBtn.disabled = true;
            } else if (status === 'error') {
                errorDiv.textContent = 'An error occurred during chat initialization.';
                startChatBtn.disabled = false;
            }
        });

        // Start Chat Function
        startChatBtn.addEventListener('click', async () => {
            const crmCustomerId = crmIdInput.value.trim();
            
            if (!crmCustomerId) {
                errorDiv.textContent = 'Please enter a CRM Customer ID.';
                return;
            }

            errorDiv.textContent = '';
            statusDiv.textContent = 'Starting chat...';
            startChatBtn.disabled = true;

            try {
                // Prepare attributes
                const sessionAttributes = {
                    crmCustomerId: crmCustomerId,
                    timestamp: new Date().toISOString(),
                    userAgent: navigator.userAgent
                };

                // Start the chat session
                await webMessaging.startChat({
                    attributes: sessionAttributes
                });

                statusDiv.textContent = 'Chat started successfully. CRM ID passed.';
                
                // Note: The SDK may take a moment to connect fully.
                // The onSessionStatus callback will update the UI when connected.
            } catch (error) {
                console.error('Chat start failed:', error);
                errorDiv.textContent = `Failed to start chat: ${error.message}`;
                startChatBtn.disabled = false;
            }
        });
    </script>
</body>
</html>

Ready to Run:
Replace your-organization-id and your-deployment-id with your actual Genesys Cloud credentials. Open the HTML file in a browser. Enter a CRM ID and click “Start Chat”. Check the browser console for detailed logs and the Genesys Cloud Admin console for the conversation transcript to verify the attribute.

Common Errors & Debugging

Error: 403 Forbidden or Unauthorized

• Cause: The Deployment ID is incorrect, or the deployment is disabled.
• Fix: Verify the Deployment ID in the Genesys Cloud Admin console. Ensure the deployment is enabled and active.
• Code Fix: Check the ORG_ID and DEPLOYMENT_ID constants in your code.

Error: Attribute Not Found in Flow

• Cause: The attribute key name in the SDK does not match the key name in the Flow.
• Fix: Ensure exact case-sensitive matching. If you pass crmCustomerId in the SDK, you must reference {{attributes.crmCustomerId}} in the Flow.
• Debugging: Add a Log block in your Flow to print the entire attributes object to the conversation log.

Error: WebSocket Connection Failed

• Cause: Network issues, firewall blocking WebSocket connections, or incorrect Org ID.
• Fix: Ensure your browser can connect to wss://webmessaging.genesiscloud.com. Check browser console for CORS or network errors.
• Code Fix: Verify the ORG_ID is correct. Ensure the SDK version is compatible with your Genesys Cloud environment.

Error: 429 Too Many Requests

• Cause: Excessive chat initiation requests from the same client.
• Fix: Implement rate limiting on the client side. Do not call startChat repeatedly in quick succession.
• Code Fix: Add a debounce mechanism to the start button.

let isStarting = false;

startChatBtn.addEventListener('click', async () => {
    if (isStarting) return;
    isStarting = true;
    
    try {
        // ... startChat logic ...
    } finally {
        isStarting = false;
    }
});

Official References

• Genesys Cloud Web Messaging SDK Documentation
• Web Messaging API Reference
• Flow Builder Documentation