Three EIM table columns must be populated in order to import file attachments. Table describes these columns and uses the attachment file budget99.doc as an example.

Table . File Attachment Columns
FILE_NAME: This column requires the root filename of the file
attachment. (ex FILE_NAME=.budget99.)
FILE_EXT: This column requires the extension type of the file attachment (DOC, XLS, or TXT). (ex FILE_EXT="doc")
FILE_SRC_TYPE: This column requires the value "FILE" or the rows
cannot be imported. (ex FILE_SRC_TYPE="FILE")

You can also use these columns to define hyperlinks,.
Defining Hyperlinks With File Attachment Columns
Column Setting
FILE_NAME Set to actual URL
FILE_EXT NULL
FILE_SRC_TYPE . URL.