Hey Lakshmanan,
We run NW7.31 SP9 so these are the steps we use for the Web dispatcher URL in any web services:
Go to Soamanager - Technical Administration(tab) - Reverse proxy settings(tab)
Add a row. for the fields, give any name to the "reverse proxy name". Then "*" for
incoming http...
incoming icm..
for "substitute host name" put the FQDN of your web disp
for "substitute http port" put the port of the web disp
if you have a "https" you can put that in the next field.
I leave "additional path prefix" blank
"meta data protocol sub..." = incoming
"endpoint protocol sub..." = config
status = active
then chck your endpoints again. if they still have your BW hostname then regenerate them. it shoudl work.
NICK