Import troubleshooting
Common CSV import validation errors and how to fix them.
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Whole-file validation
SlotSmith validates every row in a CSV before creating anything. If any row fails, the entire file is rejected and nothing is created — there is no partial import to clean up.
Common errors
| Error | Cause | Fix |
|---|---|---|
DUPLICATE_ZONE_NAME | A zone with that exact name already exists. | Rename the row or the existing zone. |
INVALID_COVERAGE_TYPE | coverage_type isn’t one of radius, postal_code, pickup. | Check for typos or extra whitespace. |
MISSING_COVERAGE_VALUE | coverage_value is blank for a non-pickup row. | Every radius/postal_code row needs a value. |
ROW_TOO_LONG | More than three columns detected. | Check for stray commas inside a value; quote the field. |
Still stuck?
If validation keeps failing on rows that look correct, re-download the template — older templates used a different column order.