The most common ones are as follows:
• Incorrect CSV file formatting - A bad formatting of a CSV file can cause a failed data import or missing rows after the import. The issue occurs more often with CSV files that with MS Excel since CSV is more prone to data failures due to a bad formatting.
• Issues with short descriptions - Although we can use a custom size for short descriptions in Magento, it is recommend to limit them to 255 characters.
• Issues with import/export paths - The import/export paths should be writable. Otherwise the corresponding procedures will fail. More details on how to set the files and folders permissions can be found in our cPanel tutorial.
• Problems with images locations - If we import images with the products, they should be stored in the /media/import folder. Otherwise error messages will be displayed and the images will not be imported. For example if the value of the image collumn is /image_subfolder/image.jpg then the correct path will be /media/import/image_subfolder/image.jpg.
• Problems with multiple images import - The import of multiple images through CSV and MS Excel image, small image and thumbnail image columns is causing problems.
