TRM Reversals - Best Practice

Dear SAP community.

What are the best practices to reverse posting done by TRM of any type of contract?

For example if an item is cleared, when in the process should FBRA be run?

If the contract has a payment, when should F8BW be run to restet the payment?

Let's asume I want to revers also interest and valuations. Do you have a step by step on which is the best way to do it? We are using R3 SAP.

Thank you