When exporting a collection into a Microsoft Excel file, you might get an error saying a cell contains more than 32767 characters.
This error message is raised because Microsoft Excel has a character limit of 32,767 characters in each cell.
See Microsoft Excel limitations.
Datablist prevents you from creating an invalid Microsoft Excel file. Most of the time you get this error because your file was imported incorrectly. Datablist allows the import of text-based files such as CSV, TSV, etc., and Excel files. Datablist doesn't handle binary files, SQL files, etc.
If your data is valid but you have a cell with very long text. You can get around this limitation by exporting your collection into a CSV file.