GuidesSKU Patterns

SKU Patterns Guide 🏷️

SKU patterns help fetchin automatically detect SKUs from your Vinted listings. Set them up once, and they work forever!

What are SKU Patterns? 🤔

SKU patterns are rules that tell fetchin how to find SKUs in your listing descriptions. For example:

  • If your SKUs look like: ABC-123 or XYZ-456
  • fetchin learns this pattern
  • Then automatically extracts SKUs from all your listings

Why Use SKU Patterns? ✨

Benefits:

  • ✅ Automatic Detection - No manual entry needed
  • ✅ 95%+ Accuracy - Works for most sellers
  • ✅ Saves Time - Set up once, works forever
  • ✅ Fewer Errors - Less manual work = fewer mistakes

How SKU Detection Works 🔍

Automatic Pattern Detection

fetchin uses AI to analyze your listings:

  1. Scans Your Listings

    • Looks at existing listing descriptions
    • Finds common patterns
    • Learns your SKU format

  2. Creates Pattern Rules

    • Identifies prefixes (like “SKU:”, “Code:”)
    • Finds separators (like ”-”, ”_”, spaces)
    • Recognizes number/letter combinations

  3. Applies to New Listings

    • Automatically extracts SKUs
    • Works for future listings too
    • No manual setup needed

Pattern Examples

Common Formats:

  • ABC-123 - Letters, dash, numbers
  • SKU: XYZ456 - Prefix, colon, code
  • ITEM_789 - Letters, underscore, numbers
  • A1B2C3 - Mixed letters and numbers

fetchin Handles:

  • Prefixes and suffixes
  • Separators (dash, underscore, space)
  • Mixed formats
  • Complex patterns

Setting Up SKU Patterns 🛠️

Option 1: Smart Analysis (Recommended) 🤖

Easiest Method - Let fetchin do it!

  1. Open Settings

    • Click the fetchin icon in your Chrome toolbar
    • Click the Settings icon (gear icon)
    • Navigate to SKU Patterns section

  2. Use Smart Analysis

    • Click “Smart Analysis” button
    • Click “Analyze My Listings”
    • The extension will fetch your Vinted wardrobe listings
    • It analyzes your listing descriptions to detect SKU patterns
    • This usually takes 30-60 seconds

  3. Review and Accept Suggestions

    • Smart Analysis will show detected patterns
    • Each pattern shows confidence level and examples
    • Click “Use This Pattern” to accept suggestions
    • Patterns are saved automatically

  4. Test Your Patterns (Recommended)

    • After accepting patterns, use Batch Testing to verify they work
    • This ensures patterns match your actual listings correctly
    • See the Testing SKU Detection section below for details

  5. That’s It!

    • Patterns are now active
    • They’ll automatically extract SKUs from your listings
    • Works for all future picklists
    • No manual setup needed

Option 2: Contact Support for Custom Patterns 🎨

If Auto-Detection Doesn’t Work

If you have very unusual SKU formats that aren’t being detected:

  1. Contact Support

    • Email: support@fetchin.app
    • Provide examples of your SKU format
    • We can help configure custom patterns

  2. What to Include

    • 2-3 examples of your SKUs
    • Description of where SKUs appear in listings
    • Any special formatting or patterns

  3. We’ll Help

    • Our team can set up custom patterns
    • Usually resolved within a few hours
    • Free support for all users

  4. Test After Setup

    • Use Batch Testing to verify custom patterns work
    • Ensures patterns match your listings correctly

Pattern Components 🧩

Prefixes

Common prefixes fetchin recognizes:

  • SKU:
  • Code:
  • Item:
  • Ref:
  • Or no prefix at all

Separators

Common separators:

  • Dash: -
  • Underscore: _
  • Space:
  • Colon: :
  • Or no separator

Format Types

  • Letters + Numbers: ABC123
  • Mixed: A1B2C3
  • With Separators: ABC-123
  • Complex: SKU: ABC-123-XYZ

Testing SKU Detection 🧪

Batch Testing (Recommended) 🎯

Best way to verify your SKU patterns work correctly!

After setting up your SKU patterns, use Batch Testing to verify they’re working:

  1. Access Batch Testing

    • Go to Settings → SKU Pattern Detection → Batch Testing
    • This tool tests your patterns against real listings

  2. Fetch Your Listings

    • Click “Fetch My Listings” button
    • Fetches your most recent 10 listings from Vinted
    • Retrieves descriptions to test against

  3. Run the Test

    • Click “Run Batch Test” button
    • Tests your configured patterns against the fetched descriptions
    • Results display below showing:
      • Match percentage - How many listings matched your pattern
      • Which descriptions matched - See exactly what was detected
      • Which didn’t match - Identify any issues

  4. Review Results

    • Check the percentage - aim for 95%+ match rate
    • Review matched SKUs to ensure they’re correct
    • If many don’t match, adjust your patterns (use ChatGPT or contact us) and test again

Why Use Batch Testing?

  • ✅ Test patterns before generating picklists/processing labels
  • ✅ Catch issues early
  • ✅ Verify patterns work with your actual listings
  • ✅ Save time by fixing patterns before processing orders

Alternative: Generate Picklist to Test

  1. Generate Picklist

    • Create a picklist with your orders
    • Check if SKUs are detected
    • Review the results

  2. Check Picklist Results

    • Look at each order
    • See if SKUs appear correctly
    • Note any missing SKUs

  3. If SKUs Missing

    • Check your listing descriptions
    • Make sure SKUs are in the description
    • Use Batch Testing to verify patterns
    • Contact support if needed

Common Issues

SKUs Not Detected:

  • Pattern might be too specific
  • Try broader pattern
  • Add more examples

Wrong SKUs Detected:

  • Pattern might be too broad
  • Make it more specific
  • Exclude common words

Inconsistent Detection:

  • Multiple patterns might conflict
  • Review all patterns
  • Simplify if needed

How Patterns Work 📋

How Smart Analysis Works

Smart Analysis analyzes your Vinted wardrobe listings:

  1. Access Smart Analysis

    • Go to Settings → SKU Patterns → Smart Analysis
    • Click “Analyze My Listings”
    • Extension fetches your listings from Vinted

  2. Pattern Detection

    • Analyzes listing descriptions
    • Detects common SKU formats
    • Creates pattern suggestions with confidence scores

  3. Review and Accept

    • Review suggested patterns
    • See examples and confidence levels
    • Accept patterns that match your SKU format

  4. Automatic Application

    • Accepted patterns work automatically
    • SKUs extracted from all future listings
    • No manual intervention needed

Best Practices 💡

  1. Start with Smart Analysis

    • Use Smart Analysis in Settings → SKU Patterns
    • Usually works perfectly
    • Only customize if needed

  2. Always Test After Setup

    • Use Batch Testing after configuring patterns
    • Verifies patterns work with your actual listings
    • Catches issues before processing orders
    • Aim for 95%+ match rate

  3. Use Multiple Examples

    • When building patterns
    • More examples = better pattern
    • Test thoroughly with Batch Testing

  4. Keep Patterns Simple

    • Simple patterns work best
    • Avoid over-complicating
    • Test before saving using Batch Testing

  5. Review Regularly

    • Check detection accuracy
    • Use Batch Testing periodically to verify patterns still work
    • Update if needed
    • Remove unused patterns

Troubleshooting 🔧

No SKUs Detected

Possible Causes:

  • No patterns set up yet
  • Listings don’t have SKUs
  • Pattern doesn’t match format

Solutions:

  • Use Smart Analysis in Settings → SKU Patterns
  • Check listing descriptions for SKUs
  • Review and update patterns

Wrong SKUs Detected

Why This Happens:

  • Pattern too broad
  • Matches other text
  • Multiple conflicting patterns

Solutions:

  • Make pattern more specific
  • Exclude common words
  • Review and refine patterns

Inconsistent Results

Try These:

  • Review all active patterns
  • Check for conflicts
  • Simplify patterns
  • Test with examples

Using fetchin Without SKUs 🔄

Note: While fetchin is designed primarily for sellers who use SKUs, you can still use the extension for label processing (cropping, merging, etc.) even if you don’t use SKUs in your listings.

If You Don’t Use SKUs

If your listings don’t contain SKUs and you want to use fetchin primarily for label processing:

  1. Set Up a Pattern That Won’t Match

    • Go to Settings → SKU Patterns
    • Create a new pattern with the regex: (?!)
    • This pattern will never match anything in descriptions
    • Name it something like “No SKUs Used” or “SKU Detection Disabled”

  2. What Happens

    • Picklists will show “SKU not found” for all items
    • Labels will automatically fall back to buyer’s username
    • You can still generate picklists and process labels
    • Labels will be cropped and merged as normal

  3. Using Buyer Username

    • Labels will show the buyer’s username instead of SKU
    • You can cross-reference the picklist to see which buyer each label is for
    • The picklist shows buyer names, so you can match labels to orders

When SKU Detection Fails

Even if you have SKU patterns set up, sometimes a product might not get detected:

  • Labels Always Have Identifiable Information

    • If SKU is not available, labels automatically fall back to buyer’s username
    • This ensures every label has identifiable information
    • You can always cross-reference the picklist to see who the order is for

  • Cross-Referencing

    • The picklist shows buyer names and order details
    • Match labels with buyer usernames shown on labels
    • No confusion about which label goes with which order

Advanced Tips 🚀

  1. Consistent Formatting

    • Use consistent SKU format in listings
    • Makes detection more accurate
    • Easier for fetchin to learn

  2. Clear SKU Placement

    • Put SKUs in listing descriptions
    • Use clear prefixes like “SKU:” or “Code:”
    • Avoid mixing with other text

  3. Multiple Formats

    • fetchin can detect multiple SKU formats
    • Works with different patterns
    • Learns from all your listings

Next Steps 🎯

Questions? Contact Support 💬

Label ProcessingMobile Picklists