"Undefined Index" error importing products over cvs file

If you happened to get one of the following error during import of products over a cvs file,

• Notice: Undefined index: _media_attribute_id
• Notice: Undefined index: _media_lablel
• Notice: Undefined index: _media_position
• Notice: Undefined index: _media_image
• Notice: Undefined index: _media_is_disabled
• Notice: Undefined index: _attribute_set

make sure, to fill each field with a meaningful value. These errors occur if you import several images / categories per product.