Import CSV Line Items question - Amazon Business Account

I didn’t have success in the google sheets forum, so figured I’d ask here. I am using the import CSV community tool for my Amazon Business Account and it is stating that it does not recognize the CSV file. Am I able to convert the transaction list to a recognizable file for now, or am I doing something wrong?

You downloaded the ‘items’ report under “Download order reports”, @seanavne?

For Amazon business the instructions were to download the shipments report, so I will give that a try. Thank you!

Let me know how it goes. Possible they updated their format and the script rules are fairly brittle.