مMizan WMS
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Dar Al Oud Trading · ZATCA Phase 2

One warehouse, two Salla stores, every sale stamped and reported to ZATCA.

Mizan (ميزان) runs the oud & bakhoor warehouse behind your retail and wholesale Salla stores, plus phone and walk-in sales — one stock ledger, idempotent Excel imports, and ZATCA-compliant simplified invoices out of the box.

Dar Al Oud Trading Est.

مؤسسة دار العود التجارية

VAT 310458921600003

Reported to ZATCA ✓
1 × Premium Eid kit520.87
2 × Musk Tahara 25 ml102.60
Net623.47 SAR
VAT 15%93.52 SAR
Total716.99 SAR
51a682172d10
bf0f6497→
be0f6304→
c10f67bd
0
double-counted orders
9
TLV tags in every QR
24h
ZATCA reporting window
15%
VAT exact to the halala

Built for one warehouse, two storefronts

Everything a trading company needs to stop reconciling spreadsheets and start trusting one number.

Idempotent Excel imports

Salla orders, products and ERP vouchers import from Excel with a file fingerprint — re-uploading the same file is refused, not double-counted. Swap for the Salla API or webhooks later without changing the ledger.

One stock ledger

Stock is always the sum of movements: who, when, why, and which source document. Kit assembly consumes components and credits the kit in the same ledger.

Phone, walk-in & barcode sales

Manual orders are priced straight from the price list plus 15% VAT. Returns scan a barcode and generate a credit note automatically.

ZATCA Phase 2, built in

UBL 2.1 XML, ECDSA cryptographic stamp, QR with the 9 required TLV tags, UUID and invoice counter, 24h reporting with a retry queue.

Immutable invoices

A reported invoice is never edited. Corrections only happen through credit or debit notes, keeping the hash chain unbroken.

3 roles, full audit trail

Warehouse custodian, admin and owner each see what they need. Every action is logged, commissions are tiered, reports export to Excel.

How VAT is computed

Salla reports the amount the customer actually paid, VAT-inclusive. Mizan extracts net and VAT from that figure exactly, rounding half-up once per document — never per line.

Salla order (base product)599.00 SAR
2 × add-on item (59.00 SAR each)118.00 SAR
Coupon EID10−71.70 SAR
Shipping25.00 SAR
Paid (VAT-inclusive)670.30 SAR
Net = paid ÷ 1.15 (half-up)582.87 SAR
VAT (15%)87.43 SAR

Unbreakable hash chain

INV-2026-00128

PIH a3838d430e

→

INV-2026-00129

PIH a2838bb0fe

→

INV-2026-001210

PIH a583906900

→

INV-2026-001211

PIH a4838ed613

3 interfaces, one application

Choose your role to explore the prototype.

Warehouse custodian

Faisal Al-Harbi

Imports, orders, barcode scans, returns and kit assembly.

Open the interface

Admin

Noura Al-Qahtani

ZATCA invoices, reporting queue, credit notes and the audit log.

Open the interface

Owner

Abdulrahman Al-Zahrani

Dashboard, VAT reports and sales commissions.

Open the interface

Phase 2 roadmap

Live Salla API & B2B clearance

Excel imports ship first because they are predictable and reversible. The same ledger swaps to the live Salla API and webhooks once order volume justifies it, plus B2B clearance invoices for wholesale customers.

Ownership

Everything stays yours

Code, hosting, domain and ZATCA signing certificates belong to Dar Al Oud Trading. Signing keys never live in the source repository.

Prototype by CyberScale