Hi there, Stella13.
The error message you receive usually occurs if the name of the account in your CSV file doesn't exist or matches the one that you have in the Chart of Accounts in QuickBooks.
Therefore, you need to check and make sure the name that appears in your Chart of Accounts is the same as the one that you have in your CSV file.
Here's the article for the full guide about the process: Import your bills in QuickBooks Online.
I've also added this link for common questions about importing data to QuickBooks Online.
Let me know if you have other concerns about importing data. I'll be happy to assist.
