ABAP前导0处理

*加上p_in的前导零

CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT'
 EXPORTING
   input = p_in
 IMPORTING
   output = P_in.

*去除p_out的前导零

CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
 EXPORTING
   input = p_out
 IMPORTING
   output = p_out.