I have uploaded csv file of bank transactions and the im atrying to add the expenses a message "An unexpected error occurred while accepting your downloaded transaction"

Thank you for turning to the Community about your banking concern, FundDana.

Let's perform some basic troubleshooting steps to help you upload the CSV file smoothly in QuickBooks Online (QBO).

When you import your transactions and add the expenses, try to use a different tax rate to test if the current one is the source of the error. If you continue to get the same result, open QBO in a private window or incognito mode. This browser doesn't save any browsing history and runs a lot smoother.

Here are the keyboard shortcuts for each browser:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P
• Safari: Command + Shift + N 

If you did not see the error message, clear the cache on the previous browser you used. This improves both the browser's and the application's overall performance. Alternatively, utilize other supported browsers to bring your bank data into the online program. 

For tips on how to successfully import your entries via a CSV file, click here to access the article. In addition, this resource contains solutions on how to troubleshoot: Common errors for importing bank transactions using CSV. It also provides an overview of the supported file format and instructions on how to properly map your entries.

Reach out to me again if you need further assistance while working in QuickBooks or if you have other banking-related concerns. I'm always ready to help you. Have a good one.