Service tax payment to government

Hi

We have two service tax number.

Assume : ST01 & ST02

ST01:

Received Service tax from Customer : 10000 on x amount (OUPUT)

Service tax Payment made to vendor : 1000 on x amount (INPUT)

Now i have to make Rs. 9000 to government behafl ST01

ST02:

Received Service tax from Customer : 0 on x amount (OUPUT)

Service tax Payment made to vendor : 1000 on x amount (INPUT)

Now it's not require to make payment to government behalf of ST02

Query:

Is it possible to make payment to government like below

9000(ST01) - 1000(ST02) = 8000 to government.

Regards,

Madhu