EDI cheques & bank statement

Hello:

i am asking the banks to print cheque on our behalf, we used program:RFFOEDI1 to send IDOC to the banks.

since cheque is printed by the bank, did we maintain any cheque register (transaction code; FCHI) in SAP?

if we maintained cheque register, the payment program: RFFOUS_C or RFFOD__S, there is no EDI function in the program to generate IDOC to send the information to the bank?

when we received our bank statement, do we use payment document number or cheque number to clear the payment document?

thanks