Regarding Incoming cheques in tcode ff68

Hi all,

in transaction ff68 we give details of the cheque and save it .after saving the details a document number is generated. but when we display the information in feba tcode we see 2 line items one is for bank and other one is for customer here we are able to capture cheque number in bank details line item but for customer line item we need same cheque number to be caputred field for both the line items is zuonr.

Our main requirement is to capture cheque number in customer line item . How can we acheieve it s there any badi or userexit avalable for the same .??

Regards

Amit