Compliance & Invoicing Utility|v1.2.0

SeqEngine

Sequential & Legal Order ID Formatter for WooCommerce

Eliminate random order numbers. Generate customizable sequential order IDs with year prefixes, custom formats, and gap-free numbering required for legal, tax, and accounting compliance.

Gapless AccountingAtomic Race-Proof LocksZero Telemetry

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Sequential Format Pattern

Template: {PREFIX}-{YYYY}-{NUMBER:4}

Order #1:ORD-2026-0001

Order #2:ORD-2026-0002

Order #3:ORD-2026-0003

PDF Invoices & packing slips ready

Searchable in WooCommerce HPOS admin

Compliance Highlights

Audited Sequential Numbering for WooCommerce

Random order numbers create headaches for bookkeepers and tax auditors. SeqEngine gives your store enterprise ledger numbering.

Gap-Free Sequential Order ID Numbering

Replace random WordPress post IDs with chronological, consecutive order numbers required by tax authorities, financial audits, and international accounting rules.

Dynamic Date & Prefix Tokens

Format order numbers exactly how your billing department needs them. Supports dynamic tokens such as {YYYY}, {YY}, {MM}, {DD}, and custom store prefixes (e.g., ORD-2026-0001).

Concurrency-Safe Atomic DB Locks

Eliminates duplicate order numbers during intense traffic bursts and high-concurrency flash sales using strict database-level atomic incrementation.

Universal PDF Invoice & Export Compatibility

Seamlessly passes formatted sequential IDs to WooCommerce PDF Invoices, Packing Slips, Stripe metadata, Lemon Squeezy receipts, and CSV ledger export tools.

Developer Audit

Technical Specifications

WooCommerce CompatibilityWC 7.0 - 9.x+ (HPOS Orders Table)

PHP RuntimePHP 7.4 - 8.3+

Database LockingAtomic DB locks preventing race-conditions

Execution Hook Time< 0.08ms overhead per order

License & TermsGPLv2 or later (1 Year Updates & Support)

Refund Guarantee14-Day 100% Money-Back Policy

Pricing & Licensing

Simple Annual License

14-day unconditional money-back policy. Immediate key delivery via Lemon Squeezy / Stripe.

Single Site

$49/ year

For individual WooCommerce merchants needing gap-free tax compliant order IDs.

1 Production WooCommerce Store
Custom Dynamic Formats & Date Tokens
PDF Invoice & Packing Slip Sync
14-Day 100% Money-Back Guarantee

Buy Single Site License →

Agency Choice

Agency & Multi-Store

$129/ year

For agencies and accountants managing tax compliance for multiple stores.

Up to 5 Production WooCommerce Stores
Staging & Localhost Domains Included Free
Fast-Track Developer Support Desk
14-Day 100% Money-Back Guarantee

Buy Agency License →

Answers

Frequently Asked Questions

Does SeqEngine alter existing past orders?

No. Existing historical orders maintain their existing IDs. SeqEngine cleanly applies sequential formatting to new incoming orders, or you can opt to retroactively format past orders with one click.

Can I reset the sequence count at the start of every calendar year?

Yes. SeqEngine includes an optional automated annual reset toggle so order counts can restart at 0001 every January 1st.

Does SeqEngine work with WooCommerce HPOS (High-Performance Order Storage)?

Yes! SeqEngine is fully optimized for HPOS and indexes sequential order numbers directly inside the wc_orders meta tables for lightning-fast backend searches.

What is your refund guarantee?

All licenses are protected by our 14-day 100% money-back guarantee. If SeqEngine doesn't fulfill your accounting specifications, simply reach out to [email protected] within 14 days for a prompt, unconditional refund.