Goods recepient for reservation at item level

Hi All,

We are trying to update the goods recipient (RESB-WEMPF) for reservations items using ztransactions. For that we are using 'BAPI_RESERVATION_CHANGE' . We are able to update the field for the reservations which were created by 'BAPI_RESERVATION_CREATE'.

But we want to update goods recipient for all the reservations. we are getting below error message. - "Reservation created automatically. No manual changes possible."

For the reservations which were created automatically, RKPF-KZVER is having value as 'F' and for the reservations which were created through BAPI, RKPF-KZVER is blank.