Issue with FBZP deletion of payment methods

Hello Experts,

Let me know if someone how to figure out this issue in ECC6.

I am trying to delete some entries on FBZP transaction - bank determination - bank accounts, but I got the error message:

F3029 - Clearing acct only allowed for an outgoing bill of exch.pmnt.

I can delete the payment methods only upon deleting the entries from this customisation.( table T042I)

Thanks

Kali.