I appreciate you for reaching out to us here on the Community page. I'm here to share with you the supported formats for your banking transactions or CSV file.
Usually, you can either use the 3-column or the 4-column format for your file. The 3 column format consists of your transaction's date, description, and amount. On the other hand, the 4 column includes the date, description, credit, and debit columns.
I'm adding this screenshot for your visual reference.