<h2>Overview</h2>
Carien Sequential Order Numbers 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.
Provide clean, sequential, and compliant order numbers — effortlessly.
At a glance
<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>
Perfect for: retail, logistics, B2B, click and collect, marketplaces, businesses with compliance/numbering requirements.
<hr />
<h2>Why you should choose this extension</h2>
<ol>
<li>Faster customer support: Easy‑to‑read order numbers improve lookups and reduce mistakes. e.g. 2025‑10‑000842 — simple, clear, instant.</li>
<li>Better accounting and reporting: Standardized order references make exports and reconciliations easier. Add prefixes per brand, channel, or country.</li>
<li>Clean operational alignment: Bring consistency across your tools: ERP, fulfillment, analytics, support.</li>
</ol>
<hr />
<h2>Key features</h2>
<ul>
<li>Continuous sequence — no accidental gaps in numbering</li>
<li>Flexible templates:
<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>Auto‑reset — monthly, quarterly, yearly, or never</li>
<li>Fixed length sequence with leading zeros (<code>{{SEQ:6}}</code> → <code>000127</code>)</li>
<li>Live preview before activation</li>
<li>Collision‑safe even during high‑traffic peaks</li>
<li>HPOS‑ready — fully compatible</li>
<li>Languages included (<code>.po/.mo</code>): EN, FR, DE, ES, IT, NL, AR, HI, JA, RU, ZH…</li>
</ul>
Template examples
<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

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

<div class="woo-sc-box info">To use this extension, sign up for a <a href="https://app.facturadirecta.com/" target="_blank" rel="noopener">FacturaDirecta account</a>.</div>
Connect your WooCommerce store with FacturaDirecta, the fast and simple cloud invoicing software.
Invoices (including simplified invoices, full invoices, and refund invoices) are created automatically in your FacturaDirecta account when orders reach the status you choose. Each invoice is generated with your selected numbering series, payment account, and PDF template, fully synced with your store data.
This extension saves time, reduces support requests, and makes sure invoices are always available where they’re needed.
<h2>Features:</h2>
<ul class="wccom-tick-list-primary">
<li>Automatic integration: invoices are generated in FacturaDirecta directly from WooCommerce orders, with support for simplified invoices, full invoices, and refund invoices.</li>
<li>Customizable triggers: choose whether invoices are created on “processing”, “completed”, or other order statuses.</li>
<li>Invoice settings: define the invoice series, assign a bank account, and select a PDF template for your invoices. Separate numbering series can be configured for simplified invoices and refund invoices.</li>
<li>Smart fiscal logic: automatic invoice type detection based on fiscal ID presence and order total. Includes configurable fiscal-ID threshold that determines when a full invoice is required.</li>
<li>Refund invoices: refund invoices (rectificative invoices) are created automatically when an order is fully refunded. They are linked to the original invoice and generated with correct negative amounts.</li>
<li>Tax compatibility: supports VAT and multiple tax configurations.</li>
<li>Automatic delivery: invoices can be emailed directly to your customers from FacturaDirecta.</li>
<li>Easy access: invoices are available to customers in My account and to store admins in the WooCommerce Orders panel. Includes direct “Edit Invoice” link to open the invoice in FacturaDirecta.</li>
<li>Cloud-based: manage all your invoices securely in FacturaDirecta.</li>
<li>No Zapier required: FacturaDirecta’s official integration relies on Zapier. With this extension, you connect WooCommerce directly and avoid extra costs or complexity.</li>
</ul>
Note: This extension reads the customer fiscal ID directly from WooCommerce order meta (not user meta), and supports the following keys: <code class="md-inline-variable-like">_billing_nif</code>, <code class="md-inline-variable-like">billing_nif</code>, <code class="md-inline-variable-like">_billing_dni</code>, <code class="md-inline-variable-like">billing_dni</code>, <code class="md-inline-variable-like">_billing_nie</code>, <code class="md-inline-variable-like">billing_nie</code>, <code class="md-inline-variable-like">_billing_cif</code>, <code class="md-inline-variable-like">billing_cif</code>, plus <code class="">nif</code>, <code class="">dni</code>, <code class="">nie</code>, <code class="md-inline-variable-like">_nif</code>, <code class="md-inline-variable-like">_dni</code>, <code class="md-inline-variable-like">_nie</code>, <code class="">NIF</code>, <code class="">DNI</code>, <code class="">NIE</code>, <code class="md-inline-variable-like">_NIF</code>, <code class="md-inline-variable-like">_DNI</code>, and <code class="md-inline-variable-like">_NIE</code>. If your checkout stores the tax ID under any of these meta names, it will be automatically sent to FacturaDirecta and used to determine the correct invoice type.

FacturaDirecta Integration

Automatically create invoices in FacturaDirecta from WooCommerce orders.

Carien Sequential Order Numbers vs FacturaDirecta Integration