Third party control Accounts in R12

Is this an optional feature in R12 - third party control accounts? What if we do not have code combinations designated as the third party control accounts? When we are running Create Accounting, as the last step it would  submit the Subledger Accounting Balances Update program to calc. the control balances... but it would not do anything since we are not using this feature (it is optional right? ... and we did not flag control accounts in our system...). How to exclude this conc. program from calling in Submit Accounting? Or is it impossible and it will run every time