All bulk upload files have to be uploaded as a CSV UTF-8 file format.
If you get an error such as "invalid byte sequence in UTF-8", it means the format of the file you're trying to import is invalid.
Please follow the following procedure to ensure you are using the right format:
- Excel: File => Save As => Select "CSV UTF-8" for the File Format
- Google Sheet: Google Sheets uses CSV UTF-8 file by default if you select Download as "Comma-separated values".
Please make sure the column headers you use are an exact match with the ones provided in the template file.