Registering NICE CXone SMS A2P 10DLC Campaigns via REST API with Node.js

What You Will Build

• This script registers a 10DLC SMS campaign in NICE CXone by constructing a compliant payload, validating it against carrier constraints, and executing an atomic POST operation.
• This implementation uses the NICE CXone SMS REST API endpoints for campaign management and OAuth 2.0 client credentials authentication.
• This tutorial covers Node.js 18+ with modern async/await patterns, axios for HTTP transport, and built-in retry logic for rate limit handling.

Prerequisites

• NICE CXone OAuth client credentials (client ID, client secret, tenant ID)
• Required OAuth scopes: sms:campaign:read, sms:campaign:write
• Node.js runtime version 18 or higher
• External dependencies: npm install axios dotenv uuid
• Pre-approved brand ID in CXone (campaign registration requires an existing brand)

Authentication Setup

NICE CXone uses OAuth 2.0 client credentials flow. The token endpoint requires a POST request with form-urlencoded credentials. The response contains an access token valid for one hour. Implement token caching to avoid unnecessary authentication calls.

import axios from 'axios';
import dotenv from 'dotenv';

dotenv.config();

const CXONE_BASE_URL = 'https://api-us-01.cxone.com';
const OAUTH_URL = `${CXONE_BASE_URL}/api/v2/oauth/token`;

let cachedToken = { token: null, expiry: 0 };

export async function getCxoneToken() {
  const now = Date.now();
  if (cachedToken.token && now < cachedToken.expiry - 60000) {
    return cachedToken.token;
  }

  const formData = new URLSearchParams();
  formData.append('grant_type', 'client_credentials');
  formData.append('client_id', process.env.CXONE_CLIENT_ID);
  formData.append('client_secret', process.env.CXONE_CLIENT_SECRET);

  const response = await axios.post(OAUTH_URL, formData, {
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
  });

  if (!response.data.access_token) {
    throw new Error('OAuth token acquisition failed: missing access_token in response');
  }

  cachedToken = {
    token: response.data.access_token,
    expiry: now + (response.data.expires_in * 1000)
  };

  return cachedToken.token;
}

Implementation

Step 1: Payload Construction and Schema Validation

The campaign registration payload must align with carrier engine constraints. The NICE CXone API expects specific fields for brand association, use case classification, sample messages, and flow directives. Validate the payload before transmission to prevent 400 errors and carrier rejection.

const ALLOWED_USE_CASES = ['ALERTS', 'AUTH', 'MARKETING', 'UTILITY'];
const MAX_SAMPLE_MESSAGES = 3;
const OPT_KEYWORDS_REGEX = /^(opt|stop|cancel|unsubscribe)$/i;

export function validateCampaignPayload(payload, brandId) {
  const errors = [];

  if (!payload.campaignName || payload.campaignName.length < 3) {
    errors.push('campaignName must be at least 3 characters');
  }

  if (!ALLOWED_USE_CASES.includes(payload.useCase)) {
    errors.push(`useCase must be one of: ${ALLOWED_USE_CASES.join(', ')}`);
  }

  if (!payload.brandId || payload.brandId !== brandId) {
    errors.push('brandId mismatch or missing');
  }

  if (!Array.isArray(payload.sampleMessages) || payload.sampleMessages.length === 0) {
    errors.push('sampleMessages array is required and cannot be empty');
  } else if (payload.sampleMessages.length > MAX_SAMPLE_MESSAGES) {
    errors.push(`sampleMessages exceeds maximum of ${MAX_SAMPLE_MESSAGES}`);
  } else {
    payload.sampleMessages.forEach((msg, idx) => {
      if (msg.length > 160) {
        errors.push(`sampleMessages[${idx}] exceeds 160 character carrier limit`);
      }
      if (/\b\d{3}[-.]?\d{3}[-.]?\d{4}\b/.test(msg)) {
        errors.push(`sampleMessages[${idx}] contains a phone number, which triggers carrier screening`);
      }
    });
  }

  if (!payload.optInOptOutKeywords || payload.optInOptOutKeywords.length < 2) {
    errors.push('optInOptOutKeywords must contain at least two keywords');
  } else {
    const keywords = payload.optInOptOutKeywords.map(k => k.toLowerCase());
    if (!keywords.some(k => OPT_KEYWORDS_REGEX.test(k))) {
      errors.push('optInOptOutKeywords must include a recognized stop keyword');
    }
  }

  if (!['SMS', 'MMS', 'VOICE'].includes(payload.flowType)) {
    errors.push('flowType must be SMS, MMS, or VOICE');
  }

  return { isValid: errors.length === 0, errors };
}

Step 2: Atomic POST Execution with Retry and Latency Tracking

Execute the campaign registration using an atomic POST operation. Implement exponential backoff for 429 responses. Track latency and success rates for carrier governance reporting. The API returns a 201 status with the campaign object upon success.

import { v4 as uuidv4 } from 'uuid';

const AUDIT_LOG_FILE = 'campaign_audit.log';

function writeAuditLog(entry) {
  const fs = require('fs');
  const timestamp = new Date().toISOString();
  const logLine = `${timestamp} | ${JSON.stringify(entry)}\n`;
  fs.appendFileSync(AUDIT_LOG_FILE, logLine);
}

export async function registerCampaign(tenantId, payload, brandId) {
  const stats = {
    requestId: uuidv4(),
    startTime: Date.now(),
    attempts: 0,
    success: false,
    latency: 0,
    status: null
  };

  const validation = validateCampaignPayload(payload, brandId);
  if (!validation.isValid) {
    stats.status = 'VALIDATION_FAILED';
    stats.errors = validation.errors;
    writeAuditLog(stats);
    throw new Error(`Payload validation failed: ${validation.errors.join('; ')}`);
  }

  const token = await getCxoneToken();
  const campaignUrl = `${CXONE_BASE_URL}/api/v2/tenants/${tenantId}/sms/campaigns`;

  const axiosInstance = axios.create({
    headers: {
      'Authorization': `Bearer ${token}`,
      'Content-Type': 'application/json',
      'Accept': 'application/json'
    }
  });

  const maxRetries = 3;
  let attempt = 0;

  while (attempt < maxRetries) {
    attempt++;
    stats.attempts = attempt;
    try {
      const response = await axiosInstance.post(campaignUrl, payload);
      stats.latency = Date.now() - stats.startTime;
      stats.success = true;
      stats.status = 'REGISTERED';
      stats.campaignId = response.data.id;
      stats.httpStatus = response.status;
      writeAuditLog(stats);
      return response.data;
    } catch (error) {
      if (error.response && error.response.status === 429) {
        const retryAfter = parseInt(error.response.headers['retry-after'] || '2', 10);
        await new Promise(resolve => setTimeout(resolve, retryAfter * 1000));
        continue;
      }
      if (error.response && error.response.status === 409) {
        stats.status = 'DUPLICATE_CAMPAIGN';
        writeAuditLog(stats);
        throw new Error('Campaign already exists with this configuration');
      }
      stats.status = 'FAILED';
      stats.error = error.message;
      writeAuditLog(stats);
      throw error;
    }
  }

  stats.status = 'RATE_LIMIT_EXHAUSTED';
  writeAuditLog(stats);
  throw new Error('Max retry attempts reached due to 429 rate limiting');
}

Step 3: Pagination, Webhook Sync, and Audit Logging

After registration, synchronize the event with an external aggregator system. Use paginated retrieval to verify campaign state and track approval success rates. The CXone campaigns endpoint supports standard pagination parameters.

export async function syncCampaignWebhook(campaignData, webhookUrl) {
  if (!webhookUrl) return;

  const syncPayload = {
    event: 'CAMPAIGN_REGISTERED',
    timestamp: new Date().toISOString(),
    campaignId: campaignData.id,
    brandId: campaignData.brandId,
    status: campaignData.status,
    useCase: campaignData.useCase
  };

  try {
    await axios.post(webhookUrl, syncPayload, {
      headers: { 'Content-Type': 'application/json' },
      timeout: 5000
    });
  } catch (error) {
    console.error('Webhook sync failed:', error.message);
  }
}

export async function listCampaignsWithPagination(tenantId, page = 1, pageSize = 25) {
  const token = await getCxoneToken();
  const url = `${CXONE_BASE_URL}/api/v2/tenants/${tenantId}/sms/campaigns`;
  
  const params = new URLSearchParams({
    page: page.toString(),
    pageSize: pageSize.toString(),
    sort: 'createdTime:desc'
  });

  const response = await axios.get(url, {
    headers: { 'Authorization': `Bearer ${token}` },
    params
  });

  const campaigns = response.data;
  const totalItems = parseInt(response.headers['x-total-count'] || '0', 10);
  const hasNext = (page * pageSize) < totalItems;

  return {
    campaigns,
    pagination: { page, pageSize, totalItems, hasNext },
    approvalStats: {
      total: totalItems,
      approved: campaigns.filter(c => c.status === 'APPROVED').length,
      pending: campaigns.filter(c => c.status === 'PENDING').length,
      rejected: campaigns.filter(c => c.status === 'REJECTED').length
    }
  };
}

Complete Working Example

The following script combines authentication, validation, registration, pagination verification, and webhook synchronization into a single executable module. Set environment variables for credentials and run with node register-campaign.js.

import dotenv from 'dotenv';
import { getCxoneToken } from './auth.js';
import { registerCampaign, listCampaignsWithPagination, syncCampaignWebhook } from './campaign.js';

dotenv.config();

async function main() {
  const tenantId = process.env.CXONE_TENANT_ID;
  const brandId = process.env.CXONE_BRAND_ID;
  const aggregatorWebhook = process.env.AGGREGATOR_WEBHOOK_URL;

  if (!tenantId || !brandId) {
    console.error('Missing required environment variables: CXONE_TENANT_ID, CXONE_BRAND_ID');
    process.exit(1);
  }

  const campaignPayload = {
    brandId: brandId,
    campaignName: 'Customer Order Updates Q4',
    useCase: 'UTILITY',
    flowType: 'SMS',
    sampleMessages: [
      'Your order #12345 has shipped and will arrive tomorrow.',
      'Reply STOP to unsubscribe from order notifications.'
    ],
    optInOptOutKeywords: ['START', 'STOP'],
    legalEntityId: process.env.CXONE_LEGAL_ENTITY_ID,
    ein: process.env.CXONE_EIN
  };

  try {
    console.log('Registering 10DLC campaign...');
    const registeredCampaign = await registerCampaign(tenantId, campaignPayload, brandId);
    console.log('Campaign registered successfully:', registeredCampaign.id);

    if (aggregatorWebhook) {
      await syncCampaignWebhook(registeredCampaign, aggregatorWebhook);
      console.log('Webhook synchronization completed.');
    }

    console.log('Verifying campaign state with pagination...');
    const listResult = await listCampaignsWithPagination(tenantId, 1, 10);
    console.log('Approval success rate:', 
      listResult.approvalStats.approved / listResult.approvalStats.total * 100 || 0, '%');
  } catch (error) {
    console.error('Registration pipeline failed:', error.message);
    process.exit(1);
  }
}

main();

Common Errors & Debugging

Error: 401 Unauthorized

• What causes it: Expired or missing OAuth token, incorrect client credentials, or missing sms:campaign:write scope.
• How to fix it: Verify the client credentials in the CXone admin console. Ensure the token cache expires before reuse. Check the OAuth response for scope validation.
• Code showing the fix: The getCxoneToken function enforces a 60-second buffer before cache expiration and throws explicitly when access_token is absent.

Error: 400 Bad Request

• What causes it: Payload schema mismatch, invalid use case value, missing sample messages, or format violation in opt-in keywords.
• How to fix it: Run the validateCampaignPayload function before POST. Ensure useCase matches carrier-allowed values. Verify sample messages do not exceed 160 characters or contain PII.
• Code showing the fix: The validation function returns a structured error array that prevents transmission when isValid is false.

Error: 409 Conflict

• What causes it: Attempting to register a campaign with identical brand ID, name, and use case to an existing record.
• How to fix it: Query existing campaigns using the paginated list endpoint before registration. Update the campaign name or use case to differentiate.
• Code showing the fix: The registration function catches 409 status codes and throws a descriptive duplicate error instead of retrying.

Error: 429 Too Many Requests

• What causes it: Exceeding CXone API rate limits during bulk registration or rapid polling.
• How to fix it: Implement exponential backoff. Read the Retry-After header when available. Space out registration calls across multiple tenants or brands.
• Code showing the fix: The registerCampaign function includes a retry loop that pauses for the specified Retry-After duration or defaults to 2 seconds before incrementing the attempt counter.

Official References

• NICE CXone SMS Campaigns API Documentation
• NICE CXone OAuth 2.0 Authentication Guide
• CXone 10DLC Brand and Campaign Registration Schema
• NICE CXone API Rate Limits and Governance