If you create a deal, settle it and post it.
Post it by T-code TBB1.
In case you want to reverse some flows of the deal, using T-code FTR_EDIT, click the button of “Change”.
Then select the tab of “Cash flow”, click the Reverse button.
If you want to reverse the deal, using T-code FTR_EDIT, click the button of “Reverse”.
You will face a warning message,
You can ignore it by clicking “Enter”. Select the reverse reason, and save it.
By now, you have reversed flows and a whole deal in TRM. But if you want to reverse the related post documents in FI, you need reverse it
using T-code TPM10.