🏷️ Understanding SKUs
Stock Keeping Units for Effective Inventory Management
What is a SKU? A SKU (Stock Keeping Unit) is a unique alphanumeric code you create to identify and track products in your inventory. Unlike universal identifiers, SKUs are specific to your business and can be customized to match your internal organizational needs.
Why SKUs Matter
SKUs are the backbone of your inventory management system. They allow you to:
- Track inventory levels across multiple locations
- Process orders quickly and accurately
- Identify products by variants (size, color, style)
- Generate detailed sales and inventory reports
- Manage stock efficiently in your warehouse
- Prevent confusion between similar products
Side-by-Side Comparison
🏷️ SKU (Stock Keeping Unit)
Scope: Internal to your business only
Who Creates It: You decide the format and structure
Format: Any alphanumeric format you want
Uniqueness: Unique within your store only
Length: Typically 8-12 characters (your choice)
TSHIRT-BLU-MED-001
SHOE-NK-AIR-42-BLK
BOOK-FIC-123456
SHOE-NK-AIR-42-BLK
BOOK-FIC-123456
🌍 UPC/GTIN
Scope: Global standard across all retailers
Who Creates It: Assigned by GS1 organization
Format: Standardized numeric codes only
Uniqueness: Globally unique identifier
Length: 8, 12, 13, or 14 digits (depending on type)
012345678905 (UPC-A)
5012345678900 (EAN-13)
00012345678905 (GTIN-14)
5012345678900 (EAN-13)
00012345678905 (GTIN-14)
💡 Key Difference: Think of SKUs as your internal nickname for products, while UPC/GTIN codes are like a product's official passport number that's recognized everywhere.
Creating Effective SKU Systems
Basic Principles
- Keep it simple: 8-12 characters is ideal - long enough to be descriptive, short enough to be practical
- Use consistent formatting: Decide on a pattern and stick with it across all products
- Make it human-readable: Your team should be able to understand what a SKU represents at a glance
- Avoid confusion: Skip letters that look like numbers (O vs 0, I vs 1)
- No special characters: Stick to letters, numbers, and hyphens/underscores
- Start with letters: Many systems work better when SKUs begin with a letter rather than a number
Common SKU Structures
Option 1: Category-Brand-Attributes
SHOE-NIKE-AIRMAX-10-BLK
Components: Category | Brand | Model | Size | Color
Option 2: Department-Type-Variant
MEN-TSHIRT-BLUE-L-001
Components: Department | Product Type | Color | Size | Sequence
Option 3: Short Code System
APL-WCH-S9-45-SLV
Components: Brand Abbreviation | Product Code | Model | Size | Color Code
Real-World Examples
| Product | SKU Example | Logic |
|---|---|---|
| Men's Blue T-Shirt, Large | MEN-TEE-BLU-L | Gender-Type-Color-Size |
| iPhone 15 Pro, 256GB, Black | APL-I15P-256-BLK | Brand-Model-Storage-Color |
| Organic Coffee, Medium Roast, 1lb | COFFEE-ORG-MED-1LB | Category-Type-Roast-Size |
| Yoga Mat, Purple, 6mm | FIT-YMAT-PUR-6MM | Department-Product-Color-Spec |
SKU Best Practices
Do's
- ✓ Document your SKU system for your team
- ✓ Include the most important attributes first
- ✓ Use abbreviations consistently (BLK for black, not BLK and BLACK)
- ✓ Plan for growth - leave room in your system for new variants
- ✓ Test your SKUs in practice before rolling them out completely
Don'ts
- ✗ Don't use manufacturer SKUs - create your own
- ✗ Don't include pricing or supplier info in SKUs (this changes over time)
- ✗ Don't make SKUs too long or too complex
- ✗ Don't reuse old SKUs for new products
- ✗ Don't use spaces (hyphens or underscores are better)
Using SKUs in CMS Max
In CMS Max, SKUs are your primary tool for managing inventory. Here's how to make the most of them:
- Product Variants: Each size, color, or style combination should have its own unique SKU
- Inventory Tracking: SKUs connect your products across locations, orders, and reports
- Order Processing: Pick lists and packing slips use SKUs to identify items
- Reporting: Filter and analyze sales by SKU patterns to understand performance
- Integrations: SKUs sync with your accounting and fulfillment systems
📚 Need Help? If you have questions about setting up your SKU system in CMS Max, contact our support team. We can help you design a structure that works for your specific product catalog and business needs.
