Accurate inventory management is a crucial factor determining the success or failure of any product-based business. A recent study shows that 43% of small businesses in Vietnam do not track inventory or use manual methods, leading to severe overstocking or stockouts, directly impacting revenue and profits.
For e-commerce sellers who use Excel or Google Sheets to manage their warehouses, you've likely experienced these dreaded situations: discovering a data entry error that throws off the entire inventory report, or finding dozens of product discrepancies during month-end inventory checks without knowing the cause. Each such mistake not only wastes investigation time but can also lead to financial losses of millions of dong.
The challenge becomes many times more complex when a business expands to multiple warehouses: main warehouse, branch warehouses, partner warehouses. Each warehouse has its own Excel file, with no real-time synchronization, making it nearly impossible to get an overall picture of the inventory situation.
How can you manage inventory across multiple warehouses accurately, in real-time, and without relying on error-prone manual tools like Excel?
Serious Issues with Managing Warehouses via Excel
Although Excel is a popular and accessible tool, using it for inventory management in a dynamic business environment poses many risks and significant limitations.
Data Not Updated in Real-Time
This is the biggest issue with managing inventory using Excel. When employee A ships goods for order fulfillment but forgets to update the Excel file, or the computer crashes while updating, employee B, looking at the same Excel file, might think there are enough goods to accept new orders. This results in overselling, causing losses for both customers and the shop's reputation.
In a multi-channel business, this problem is even more severe. A product sold on Shopee might not have its inventory immediately updated on Lazada and TikTok Shop, leading to multiple orders for the same product being placed simultaneously on different platforms when there's only one unit left in stock.
Inevitable Errors Due to Manual Data Entry
Humans are not machines; errors are inevitable. Mistyping a quantity from 150 to 1500, incorrect formulas in a cell that corrupt an entire column of data, or accidentally deleting an important row are common mistakes when working with Excel. The worst part is that these errors are often not detected immediately but only surface during periodic inventory checks, at which point it's too late to fix them.
Multi-Warehouse Management Becomes a Nightmare
When a business expands to multiple locations, managing with Excel becomes extremely complicated. Each warehouse has its own Excel file, each managed by a different person with different recording methods. Consolidating data from all warehouses to get an overall inventory view requires manual collection, copy-pasting, and calculations, which is very time-consuming and prone to errors.
Transferring goods between warehouses is also a big challenge. When transferring 50 products from warehouse A to warehouse B, you must remember to update both Excel files: reduce inventory in A and increase inventory in B. Forgetting either of these actions will make the data completely inaccurate.
Inability to Track Accurate Cost of Goods Sold
Many sellers purchase inventory in multiple batches at different prices. When shipping goods, they don't know precisely which batch they are shipping from and at what cost. This leads to inaccurate profit calculations and flawed financial reports. The FIFO (First In, First Out) costing method, while standard, is extremely complex to implement manually in Excel.
No Automatic Low Stock Alerts
With Excel, you have to actively remember to check inventory daily to know which products are running low. Forgetting to check for a day can lead to sudden stockouts, inability to fulfill received orders, causing losses in revenue and reputation. Setting up automatic alerts in Excel is possible but requires knowledge of macros and VBA, which most sellers do not have.
GTG CRM - Professional Warehouse Management System for All Scales
Fully recognizing the challenges businesses face with manual inventory management methods, GTG CRM has developed an integrated, automated, and extremely easy-to-use warehouse management system suitable for all scales, from individual sellers to large distribution enterprises.
The system is not just a place to record inventory data, but a comprehensive solution that automates the entire process from inbound, outbound, and inter-warehouse transfers to reporting and alerts. All operations are recorded with full audit trails, ensuring transparency and traceability when needed.
Warehouse Management Features
1. Multi-Warehouse - Manage From 1 Dashboard
Create and manage multiple warehouses simultaneously:
- Main warehouse (central stock)
- Branch warehouses (by location)
- Consignment warehouses (for partners)
Each warehouse has its own inventory, but all are displayed on 1 dashboard. Immediately know which warehouse has stock and which needs restocking.
2. Documented Inbound/Outbound Shipments
All warehouse transactions have clear documentation:
- Inbound Shipment Order: Received from suppliers, clearly stating quantity and unit price
- Outbound Shipment Order: Shipped against sales orders or manual shipments
- Transfer Shipment Order: Transferring goods between warehouses - with full tracking
3. Automatic Cost of Goods Sold Calculation (FIFO)
The system automatically calculates the cost of goods sold using the FIFO (First In, First Out) method:
- Batch 1 inbound: 100 units × 50,000đ
- Batch 2 inbound: 200 units × 55,000đ
- 150 units shipped → system automatically calculates: 100 × 50K + 50 × 55K = accurate cost of goods
No need for manual calculation in Excel - financial reports are always accurate.
4. Order Synchronization
When an order is confirmed → inventory automatically decreases:
- Order from Shopee → deduct from stock
- Order from website → deduct from stock
- Order from Lazada → deduct from stock
- All synchronized in real-time → never oversell
5. Low Stock Alerts
Set safety thresholds for each product:
- Product A: minimum stock = 50
- When stock falls below 50 → system alerts immediately
- Never face unexpected stockouts
6. Real-time Inventory Reports
- Inventory by warehouse, by product, by date
- Detailed inbound/outbound history
- Cost of goods, profit/loss reports by product
Comparison: Excel vs GTG CRM
| Criterion | Excel | GTG CRM |
|---|---|---|
| Real-time | ❌ Manual updates | ✅ Automatic upon transaction |
| Multi-warehouse | ❌ Multiple files, difficult to manage | ✅ 1 dashboard, all warehouses |
| FIFO Cost of Goods | ❌ Manual calculation via formulas | ✅ Automatic calculation |
| Low Stock Alerts | ❌ Must remember to check manually | ✅ Automatic alerts |
| Order Synchronization | ❌ Copy-paste | ✅ Automatic stock deduction |
| Inbound/Outbound Documents | ❌ None | ✅ Full documents |
| Errors | High | Almost 0 |
Who Should Use It?
- E-commerce Sellers selling on multiple platforms, needing inventory synchronization
- Retail Stores with multiple branches
- Distributors managing a central warehouse + dealer warehouses
- Manufacturing Businesses needing to track raw materials + finished goods
Conclusion - Transition from Excel to a Professional Inventory Management System
In this era of rapid technological development, clinging to Excel for inventory management is not only a waste of time but also poses significant risks to businesses. Businesses that have transitioned to professional inventory management systems report up to a 95% reduction in errors, save 60% of the time spent on warehouse-related operations, and most importantly, never have to face overselling or sudden stockouts.
GTG CRM offers you an easy and painless transition opportunity. You can start by importing your existing Excel data into the system in just a few minutes. Afterward, all inbound and outbound operations will be automated and synchronized in real-time with orders from e-commerce platforms, completely eliminating manual data entry.
Most importantly, GTG CRM's warehouse management system is not standalone; it is deeply integrated with other modules such as order management, electronic invoices, and financial reporting. When an order is confirmed, inventory is automatically deducted. When an invoice is issued, the cost of goods is automatically calculated. All data flows seamlessly between modules, ensuring consistency and absolute accuracy.
With 36,888 free credits upon registration, you have sufficient resources to manage thousands of inbound and outbound transactions, enough to fully experience and evaluate the system's effectiveness. Spend 10 minutes setting it up, and you'll never have to go back to Excel again.
Register for GTG CRM for free and start professional warehouse management at gtgcrm.com
