Service Tax Registration Number

Dear Experts,

we have 00001/00003/00002 and 00004 we have only one plant called xxxxx and having 4 service tax registration numbers.

How to map this in SD CIN.

is service tax reg no and Excise registration no is same or not, if not what is the different, and where to maintain this service tax registration numbers in J1ID Transaction.

Sales tax is applicable only for Scrap Sale, we are not having any material sales

Now we need your suggestions on this how to map these cases in SD CIN.

Eargly awaiting for your responses.

Thanks

Raju.