SAP_MSS component does not has a new Location

Hi ,All:

i have done job according to <NWDI Cookbook for XSS Customers Modification guide for XSS>

But when configuring the track with the J2EE Engine fields, the system information isn't updated (SAP_MSS component doesn't has a new Location).

My Portal Version is 7.02 and MSS version is 603

is there anything wrong with my system?

futhermore,I want to know what is the essential meaning of SC Location?