You have executed payment run via transaction code F111, now you want to reverse the flows. Please execute the below steps:
1) Reverse transaction in transaction manager.
2) Execute transaction FBRA for the clearing document which you can find in the payment request but also in the 'original' FI document and then to the bank clearing account: there you also should find the clearing document. If the clearing is already reset then you can check the change documents of the 'original' FI document ('original' means the document created by TBB1). You have to reset and reverse the clearing document.
3) Execute transaction F8BW to reverse the payment request. The payment request should still be in table PAYRQ, but the request is marked as reversed and the clearing document in the payment request is the number of the payment request itself.
4) Execute transaction TPM10. The 'original' FI document will be reversed.