When uploading a template into Board and the data may not be in the correct format, or part of the dataset, the system gives an error message. The message is not very clear as to what the user should do, only that the cell is invalid - would be more user friendly to tell the user what they are required to do.
Example on the screenshot: Each row of the error informs the user of the cell it relates to, this is repeated for each cell that has an error - this is helpful, however, doesn't give clarity to the user. The example is that the date format is not correct but message states is not on of the suggested values.