I am trying to import data into the Activity table, including data for the CreatedDate field. No matter how I try to format the datetime data in the CreatedDate column in my CSV file, the data is imported without error, but when I go into the Activity screen in method to look at it, I get an "invalid data format" error popup. I can click out of the popup and then view the Activity screen, but this is very annoying.
How can I format the datetime data in my CSV import file so that data I import for the CreatedDate field does not cause this annoying popup error to occur?