If you're using Kiwi’s Basic or Advanced Recommender, it’s important to format your sizing ranges correctly. Kiwi currently supports only the standard hyphen (-) as the range delimiter.
✅ Supported Format (Works)
These formats use a hyphen:
15-20 15 - 20
Both are valid.
❌ Not Supported (Will Cause Errors)
If you use an en dash (–) or em dash (—), Kiwi will not recognize the range and will throw an error.
Examples that will not work:
15–20 15 – 20
This issue commonly happens when AI tools (including ChatGPT) or some text editors automatically replace hyphens with long dashes.
Why This Happens
Kiwi’s Recommender reads ranges using the standard hyphen (-)
Long dashes look similar but are actually different characters
When a long dash is used, the system can’t interpret the range properly
We are planning improvements to support long dashes in the future.
What This Does Not Affect
Custom Recommender:
Works independently and is not affected by this limitation.Tables not used by Recommender (units disabled):
You can use any dash style if the table is not powering a recommendation.
How to Fix the Error
Open your sizing table (CSV or in-app editor)
Replace all long dashes – with standard hyphens -
Save and re-upload the table if needed
Refresh the Recommender setup
Tip: If you’re unsure which dash you're using, paste the value into a plain text editor — long dashes become more visible.