Shopify CSV column cleanup
Shopify CSV Too Many Columns Error
This error appears when your import contains columns Shopify does not understand or more fields than the importer can process. EcomCSVFix removes unsupported fields while keeping the Shopify product columns that matter.
What causes this error
- A third-party export app added custom columns that are not part of Shopify's standard product import.
- A supplier spreadsheet was copied into your CSV with fields like supplier_code, carton_qty, internal_cost, or warehouse_notes.
- Custom metafield columns were added in a format Shopify's basic product CSV import does not recognize.
- Merged exports created duplicate or empty columns that still count as fields during import.
How to fix it
Option A: fix it manually
- Open the CSV in Excel or Google Sheets and inspect the header row from left to right.
- Keep valid Shopify columns such as Handle, Title, Body (HTML), Vendor, Product Category, Type, Tags, Published, Option1 Name, Option1 Value, Option2 Name, Option2 Value, Variant SKU, Variant Price, Variant Inventory Qty, Variant Requires Shipping, Variant Taxable, Image Src, Image Alt Text, and Status.
- Delete unsupported columns, including supplier-only fields, internal notes, custom_field, supplier_code, and app-specific export metadata.
- Save as CSV UTF-8 and retry the Shopify product import.
Option B: fix it automatically
- Upload the CSV and EcomCSVFix compares your headers against Shopify's expected product CSV structure.
- Download a cleaned CSV with unsupported columns removed or normalized into valid Shopify headers.
Before and after
Handle,Title,Vendor,Variant Price,custom_field,supplier_code
blue-t-shirt,Blue T-Shirt,Acme,19.99,summer-drop,SUP-8842Handle,Title,Vendor,Variant Price
blue-t-shirt,Blue T-Shirt,Acme,19.99Fix it automatically in 30 seconds
Upload your CSV, let EcomCSVFix repair the broken rows, then download a Shopify-ready file.
Free for up to 5 files/month. No credit card.
FAQ
Can Shopify import custom columns?
Only if they use a Shopify-supported format. Random supplier, app, or spreadsheet columns are usually rejected by the standard product CSV importer.
Which columns should I keep first?
Start with Handle, Title, Vendor, Type, Tags, Published, option columns, variant columns, image columns, and Status. Then add only fields you know Shopify accepts.
Do empty columns matter?
Yes. Empty columns with headers, duplicate blank-looking columns, or trailing separators can still make the file wider than expected.
Will deleting supplier columns delete my Shopify data?
Deleting unsupported columns from the import file only removes data Shopify would not understand in that import. Keep a backup of the original supplier file if you need those fields elsewhere.