---
title: "Overview of the ERP Tân Doanh project"
url: https://phatdev.net/en/docs/erp-tan-doanh/tong-quan
lang: en
updated: 2026-10-20
alternate:
  vi: https://phatdev.net/docs/erp-tan-doanh/tong-quan
markdown: https://phatdev.net/en/docs/erp-tan-doanh/tong-quan.md
---

# Overview of the ERP Tân Doanh project

Part of the doc set: [ERP Tân Doanh](https://phatdev.net/en/docs/erp-tan-doanh.md)

> What ERP Tân Doanh is, its scope, business principles and current status.

## Background
ERP Tân Doanh is software for managing **inventory, sales, purchasing, warranty, finance and accounting** across the Tân Doanh and IGA retail operations. It has been built since 09/2026 from its own set of planning documents. The project is for **internal use** only and is not open to the public; staff sign in through a shared account and permissions are granted per person.

## Scope
| Module | What it covers |
|---|---|
| Inventory | Stock levels, receipt/issue/transfer slips, stocktakes, stock ledger, barcode scanning, serial numbers |
| Sales | Quotes, orders, handover, delivery, customers, COD reconciliation |
| Purchasing | Supplier purchase orders, reorder suggestions, receiving goods against an order |
| Warranty | Warranty lookup, RMA tickets, fault reports |
| Finance | Cash funds, receipt/payment vouchers, receivables and payables |
| Accounting | Journal entries, ledgers, reconciliation, period locking, financial reports |
| Reports and settings | Gross profit, sales, accounting periods, users, audit log, backups, testing |

## Business principles
- **Posted ledger entries are never edited, only reversed.** The database has triggers that block UPDATE and DELETE on the ledgers.
- Revenue is recognised at the point of **successful delivery**.
- Cost is a weighted average **per item and per warehouse**; returns are refunded at the **post-discount price**.
- COD balance = collected on behalf - remitted - approval fee, without double-counting money the customer transferred directly.

## Key numbers
126 screens, 120 migrations, more than 60 tables, 14 automated browser tests, and a business test suite that runs inside the application itself.

## Status
Running as an internal trial. Product and warranty data sync one way from the existing systems; the accounting module runs as a parallel draft and is expected to become the official ledger from early 2027.