You would like to pass barcode information via BAPI_PO_CREATE1  BAPI_PO_CHANGE  BAPI_CONTRACT_CREATE  BAPI_CONTRACT_CHANGE  BAPI_SAG_CREATE  BAPI_SAG_CHANGE  BAPI_PR_CREATE or BAPI_PR_CHANGE However  the BAPIs do not contain the necessary fields where the bar code could be entered