How to process Service tax captured from Credit Memo

Dear All Gurus and CIN experts,

I have to configure business flow where I get service tax calculated in credit memo.

Now question is how this service tax can be updated to service tax registers? which are t codes for that?

Do I have to do specific configuration for sevice tax for service tax registers?

I know normal excise we create excise invoice via J1IIN and then through J1I5 we update regisetrs.

How I can do service tax registers update in above case and then further availing the credit of the service tax?

Highly appreciate your experts comments

Thank you all.

Please reply...

regards,

shyam