payment MT101 through profit center

Dear expert,

We are using bank to bank transfer ( MT101) by F111 program.We are following below procedure.

1.    Create a payment request using T code FRFT_B

2.    Release the payment request using T code FRFT_B

3.    Create the payment proposal using T code F111

Now the requirement is we need to add profit center for every payment.And profit center is very for every transaction.

So how can we link it .Please suggest some idea.

Regards,

Samar