http://www.cisco.com/web/partners/services/programs/smartcare/downloads/SC_1.6_Partner_User_Guide_en_row.pdf
パートナーユーザーガイドに手順に関する記載がございましたが、こちらでうまくいきますでしょうか?
Step 5
Specify the login credentials to be used for the new devices in inventory.
You can manually specify this information, or you can copy and paste the information from a CSV file. To copy from a CSV file,
select and copy the rows that contain the credential information.
Be sure to include the column that contains the IP addresses in your selection.
Then, in Smart Care, click to position your cursor in an empty username field and paste the copied information.