Hello there, user2119694. Allow me to share details about import a.csv file.
It seems that you're trying to import bank transactions. Please be guided that we have to map the data when importing the .csv file. This is to make sure that the details will post into its corresponding account, customer, and so forth.
In addition, let's check the file to see if it meets the right formatting. Please refer to this article: Import bank transactions using Excel CSV files. On the Formatting CSV files for import section, you'll see what's the correct formatting for .csv file.
Please comment below if you have more questions. Have a great day!