Follow the guidelines in this topic to ensure that your file imports successfully.
You can easily create delimited .txt, .csv, or XML Spreadsheet 2003 format files by using Microsoft Office Excel.
If your file uses only ASCII characters, save the file as a comma-delimited values (.csv) file.
If you want to transform data as part of the import process, you should identify whether the provided transformations can do the required changes, or whether you need to edit your source data before importing it. For more information, see Transformation Reference.
Make sure the first line of the file contains column headings.
Make sure data exists for all business-required attributes.
Note
By default, the maximum size of the files that you can import is 8 megabytes (MB). This means: