<h2>Overview</h2>
<p><strong>Carien Sequential Order Numbers</strong> replaces random WooCommerce order IDs with sequential, readable, and fully customizable numbers. Improve accounting clarity, streamline customer support, and stay aligned with your internal processes.</p>
<p>Provide clean, sequential, and compliant order numbers — effortlessly.</p>
<p><strong>At a glance</strong></p>
<ul data-spread="false">
<li>100% sequential order numbering (no unexpected gaps)</li>
<li>Custom prefix/suffix/dynamic templates (e.g. <code>{{YYYY}}-{{MM}}-{{SEQ}}</code>)</li>
<li>Automatic reset — monthly, quarterly, yearly</li>
<li>Compatible with High‑Performance Order Storage (HPOS)</li>
<li>Multilingual and RTL‑ready</li>
<li>Built for high‑volume performance</li>
</ul>
<p><strong>Perfect for</strong>: retail, logistics, B2B, click and collect, marketplaces, businesses with compliance/numbering requirements.</p>
<hr />
<h2>Why you should choose this extension</h2>
<ol>
<li><strong>Faster customer support</strong>: Easy‑to‑read order numbers improve lookups and reduce mistakes. e.g. <strong>2025‑10‑000842</strong> — simple, clear, instant.</li>
<li><strong>Better accounting and reporting</strong>: Standardized order references make exports and reconciliations easier. Add prefixes per brand, channel, or country.</li>
<li><strong>Clean operational alignment</strong>: Bring consistency across your tools: ERP, fulfillment, analytics, support.</li>
</ol>
<hr />
<h2>Key features</h2>
<ul>
<li><strong>Continuous sequence</strong> — no accidental gaps in numbering</li>
<li><strong>Flexible templates</strong>:
<ul>
<li>Variables: <code>{{SEQ}}</code>, <code>{{YYYY}}</code>, <code>{{YY}}</code>, <code>{{MM}}</code>, <code>{{DD}}</code></li>
<li>Prefix/suffix per site or business need</li>
</ul>
</li>
<li><strong>Auto‑reset</strong> — monthly, quarterly, yearly, or never</li>
<li><strong>Fixed length sequence</strong> with leading zeros (<code>{{SEQ:6}}</code> → <code>000127</code>)</li>
<li><strong>Live preview</strong> before activation</li>
<li><strong>Collision‑safe</strong> even during high‑traffic peaks</li>
<li><strong>HPOS‑ready</strong> — fully compatible</li>
<li><strong>Languages included</strong> (<code>.po/.mo</code>): EN, FR, DE, ES, IT, NL, AR, HI, JA, RU, ZH…</li>
</ul>
<p><strong>Template examples</strong></p>
<ul>
<li>Year‑month + sequence: <code>{{YYYY}}-{{MM}}-{{SEQ:5}}</code> → <code>2025-10-00412</code></li>
<li>Brand code: <code>SHOP-{{SEQ:6}}</code> → <code>SHOP-000842</code></li>
<li>Date‑based: <code>{{YY}}{{MM}}{{DD}}-{{SEQ:4}}</code> → <code>251024-0083</code></li>
</ul>

Carien Sequential Order Numbers

<p>Replace random WooCommerce order IDs with clean, sequential numbering. Fully customizable formats, optional resets, and HPOS compatibility.</p>

<div class="woo-sc-box alert"><strong>Important:</strong> This extension facilitates e-invoicing through the external Fattura-Elettronica-API service. It does not provide legal or tax advice. Please consult your accountant to confirm the correct settings for your business.</div>
<div class="woo-sc-box info">This extension requires a <a href="https://fattura-elettronica-api.it/registrazione/" target="_blank" rel="noopener">Fattura-Elettronica API account</a>.</div>
<h2 id="what-is-fattura-elettronica-api-for-woocommerce">What is Fattura Elettronica API for WooCommerce?</h2>
<p>Fattura Elettronica API is a WooCommerce extension that turns your store orders into compliant Italian electronic invoices. It connects your shop to the external Fattura-Elettronica API service, so you can issue, send, and track SDI e-invoices without leaving WordPress.</p>
<p>Designed for Italian businesses selling online, it removes manual invoicing, reduces errors, and saves time on every order.</p>
<h2 id="top-benefits">Benefits</h2>
<ul class="wccom-tick-list-primary">
<li>Save time: create and send e-invoices automatically from WooCommerce orders.</li>
<li>Stay compliant: issue invoices aligned with Italian SDI requirements.</li>
<li>Fewer mistakes: customer and order data flows directly into the invoice.</li>
<li>Clear status tracking: see when invoices are sent, delivered, or if action is needed.</li>
<li>Better customer experience: email the invoice PDF to your buyer.</li>
</ul>
<h2 id="who-is-it-for">Who is it for?</h2>
<ul class="wccom-tick-list-secondary">
<li>Italian companies and professionals who must issue electronic invoices via SDI.</li>
<li>WooCommerce stores that want to automate invoicing and reduce admin work.</li>
<li>Agencies managing multiple Italian WooCommerce stores and looking for a reliable, standards‑aligned solution.</li>
</ul>
<h3 id="how-it-works-simple">How it works</h3>
<ol>
<li>Connect your WooCommerce store to your Fattura-Elettronica API account.</li>
<li>Choose when invoices should be created (e.g. upon order completion).</li>
<li>The extension sends the invoice to the Fattura-Elettronica-API service for SDI delivery.</li>
<li>Invoice status updates come back to your store automatically.</li>
<li>The customer receives the PDF invoice by email when it’s ready.</li>
</ol>
<h2 id="key-features">Features</h2>
<ul>
<li>Seamless API integration with Fattura-Elettronica-API for SDI e-invoicing.</li>
<li>Automatic invoice creation from WooCommerce orders.</li>
<li>Status updates and error messages surfaced in the order timeline.</li>
<li>Customer email with invoice PDF when delivered.</li>
<li>English and Italian localization.</li>
</ul>
<h3 id="why-choose-this-plugin">Why you should choose this extension</h3>
<ul>
<li>Built specifically for Italy’s e-invoice workflow, not a generic invoicing tool.</li>
<li>Keeps your invoicing process inside WooCommerce to reduce context switching.</li>
<li>Clear, simple settings designed for store managers, not developers.</li>
</ul>
<h2 id="requirements">Requirements</h2>
<ul>
<li>WooCommerce installed and active.</li>
<li>An active account with the external Fattura-Elettronica-API service.</li>
<li>PHP 7.4 or higher.</li>
</ul>
<h3 id="support-and-documentation">Support and documentation</h3>
<p>You’ll find setup steps on the extension’s settings page. If you get stuck, reach out to support and we’ll help you configure the connection.</p>

Fattura Elettronica API

<p>Send Italian electronic invoices (fatture elettroniche) from your WooCommerce store to the Italian Agenzia delle Entrate (SDI).</p>

Carien Sequential Order Numbers vs Fattura Elettronica API