How to Restrict GL Accounts of AR Transactions in Distribution Class e.g. Revenue, Tax & Rounding Di

Hi

Presently we are able to change GL Accounts of AR Transactioins in Distribution Classes for Revenue, Tax & Rounding Distribution. But Receivable Class is freez and not updatable,

Now we want to restrict it or should not allow to change after Completion and accounting of AR Transaction.

Please advice. How can we restrict it.

Regards

Manoj Dengane