ET_SCARR STRUCTURE SCARR OPTIONAL
VALUE(CARRID) TYPE SCARR-CARRID OPTIONAL
VALUE(MANDT) TYPE SCARR-MANDT DEFAULT SY-MANDT
VALUE(CARRID) LIKE SCARR-CARRID
TAB_B1 STRUCTURE SCARR
REFERENCE(CARRIER) TYPE SCARR
VALUE(IS_CARR) TYPE SCARR
VALUE(IV_CARRID) LIKE SCARR-CARRID DEFAULT SPACE