What is an SKU? Meaning and how to create SKUs when selling products.

What is an SKU and why do all successful e-commerce businesses use it? More than just random characters, an SKU is a key tool for accurately and easily finding and managing products. Let's explore the vital role of SKUs in warehouse operations and sales optimization with AGlobal

1. Overview

Unlike the manufacturer's generic barcode, each SKU is an internal "identity card," helping to accurately distinguish items based on specific attributes.

1.1. What is an SKU?

SKU stands for Stock Keeping Unit. It is an identifier consisting of both letters and numbers, defined by the business to represent important product information such as:

  • Product Type
  • Color
  • Size
  • Brand
  • Category

Thanks to SKUs, businesses can track inventory, control incoming and outgoing goods, and analyze sales quickly and accurately

Read more:  What is an SKU?

1.2. How to Professionally Create SKU Codes and Practical Examples

A smart SKU code typically includes information fields arranged from general to specific.

     SKU Code Formula:

[Brand Name] + [Product Line] + [Product Type] + [Color] + [Size]

Example: You sell Nike t-shirts, black, size L. The SKU could be: NK-AT-DEN-L

Để tránh nhầm lẫn khi quy mô kho hàng mở rộng, hãy ghi nhớ các lưu ý sau:

  • Không nên dùng số 0 ở đầu: Các phần mềm quản lý kho (như Excel) thường tự động xóa số 0 ở đầu dãy số, điều này dễ gây sai lệch dữ liệu.
  • Hạn chế các ký tự đặc biệt: Tránh dùng dấu cách, dấu xuyệt (/), hay các ký tự lạ. Thay vào đó, hãy dùng dấu gạch nối (-) hoặc gạch dưới (_) để phân tách các trường thông tin.
  • Độ dài vừa đủ: Một mã SKU lý tưởng nên nằm trong khoảng 8 - 12 ký tự đủ để đảm bảo thông tin, dễ đọc và dễ nhập liệu.
  • Ưu tiên dùng chữ cái: Thay vì dùng 1, 2 cho màu sắc, hãy dùng chữ cái gợi nhớ như RD (Red), BL (Blue). Điều này giúp nhận diện sản phẩm dễ dàng mà không cần tra cứu bảng mã.

Đọc thêm: Cách đặt mã SKU cho sản phẩm

 Ví dụ thực tế về cách đặt mã SKU: 

Sản phẩm

SKU ví dụ

Giải thích

Áo sơ mi nam trắng M

SMN-TR-M

SMN: sơ mi nam

TR: trắng

M: size M

Son 3CE đỏ

SON-3CE-DO

SON: son

3CE: thương hiệu son

DO: đỏ

Cốc sứ trắng “Love”

COSU-TR-L

COSU: cốc sứ

TR: trắng

L: chữ “Love”

1.3. How does SKU work in inventory management?

In a warehouse management system, each product is assigned an SKU code. When activities such as:

  • Receiving goods
  • Shipping goods
  • Selling goods
  • Inventory checks occur

The system will use the SKU code to accurately identify the product.

For example:

  • When selling a size L shirt, the system will deduct the quantity of SKU SMN-TR-L.
  • When receiving additional goods, the quantity of the corresponding SKU will increase.

Businesses can manage thousands of products without errors.

2. The Role of SKUs in Product and Sales Management

Understanding the nature of SKUs goes beyond mere identification; it's a core foundation for optimizing the entire operational process of a business.

2.1. Inventory Control Based on the Concept of SKUs

SKU codes allow businesses to track inventory fluctuations in real time. Instead of manual inventory checks, the management system uses SKU codes to provide accurate inventory quantities for each variant. This helps business owners proactively plan their purchasing, eliminating the risk of supply chain disruptions or excessive inventory.

2.2. Enhancing Warehouse Operational Efficiency Through SKUs

In a warehouse environment with diverse product types, SKU codes are a tool that shortens the time spent searching for and organizing goods. A scientifically designed coding system minimizes errors in the picking and packaging process. Especially for modern retail models, the application of SKU codes is a decisive factor in order processing speed and customer satisfaction.

2.3. Supporting Business Data Analysis from SKU Codes

SKU codes provide detailed data on the business performance of each product by color, size, or material. Through sales analysis based on SKU codes, managers can accurately identify key product groups or slow-moving items. This is crucial data for building marketing strategies and optimizing capital allocation plans.

2.4. Optimizing Business on E-commerce Platforms

On platforms like Amazon, Shopee, or TikTok Shop, SKU codes are a prerequisite for managing product variations.

For example: A product with 3 colors and 4 sizes will correspond to 12 separate SKU codes.

Detailed SKU separation allows the system to automatically update inventory for each version, ensuring accurate display on the online store and preventing situations where customers place orders but the stock for that version is out of stock

Đọc thêm: Lợi ích của SKU 

3. Common Errors When Creating SKU Codes

Although SKUs are very useful in inventory and sales management, many businesses still make mistakes when creating them. These errors often make the system difficult to use, cause confusion, and reduce management efficiency.

3.1. SKUs that are too long and difficult to understand

Some businesses create SKU codes that are too long, making them difficult for employees to read and remember during work. This wastes time searching for products and easily leads to confusion, reducing work efficiency.

Ví dụ: GIAYNIKEXANHDUONGSIZE42JORDAN4

3.2. Lack of a Code Assignment System

If each employee assigns SKU codes in their own way, the system will quickly become chaotic and difficult to manage. This can lead to confusion in inventory management, wasting time and reducing operational efficiency.

Therefore, businesses should establish a unified SKU code assignment system from the outset. This ensures consistency and ease of use for everyone

3.3. Duplicate SKUs

Duplicate SKUs are a serious error because they can cause:

  • Inventory discrepancies
  • Product confusion
  • Incorrect sales data

Duplicate SKUs are a serious error because they can cause inventory discrepancies, product confusion, and incorrect sales data. Therefore, each product must have a unique SKU to ensure the inventory management system operates accurately and efficiently

4. Conclusion

Understanding what SKUs are and how this identifier works is a crucial step in standardizing product management processes. Beyond just simple alphanumeric characters, a well-structured SKU system helps businesses optimize resources easily. Businesses need to optimize their SKUs now to minimize errors and enhance customer experience in the fiercely competitive e-commerce era

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