Search for Payment Reference (KIDNO) in new bank statement processing (FEB_BSPROC)

Hi,

we are planning to use the field BSEG-KIDNO for transaction reference numbers with a length of 26 digits. Therefore, we would like to be able to search for entries in this field on the assignment tab of the new bank account statement transaction FEB_BSPROC. Unfortunatelly, I cannot add this search field, only fields like XBLNR, ZUONR, XREF1-3 are available. Does someone know, whether it is possible to add addiontal fields on the assignment tab?

Thanks and best regards

Thomas