How to fix it
- Write manual in Fulfillment service on each listed row, unless you ship through a fulfillment app that gave you its own value.
Example
A file with this problem
Title,URL handle,Status,Option1 name,Option1 value,Price,Inventory tracker,Inventory quantity,Continue selling when out of stock,Fulfillm... Cotton Tee,cotton-tee,active,Size,S,20.00,shopify,5,deny,,
What the checker says about it
- Line 2: Fulfillment service is blank. Enter manual ("Fulfillment service can't be blank").
Once the listed rows are fixed, check the file again; the checker also looks for every other problem Shopify documents, so you do not trade one error for the next.