Empty fields in STRUCTURE_TO_CSV are converted to double quotes after conversion.

[yutngc]

  LR_CONVERTER = CL_RSDA_CSV_CONVERTER=>CREATE(
                    I_DELIMITER = SPACE
                    I_SEPARATOR = CL_ABAP_CHAR_UTILITIES=>HORIZONTAL_TAB ).

  LR_LINE = CL_RSDA_CSV_CONVERTER=>GET_CHAR_WORKAREA( <L_S_DATA> ).
  ASSIGN LR_LINE->* TO <L_LINE>.

  CLEAR L_ITEMS.
  LR_CONVERTER->STRUCTURE_TO_CSV( EXPORTING I_S_DATA = <L_S_DATA>
                                  IMPORTING E_DATA = <L_LINE> ).

In this case, the content of <L_LINE> is

" "#" "#" "#" "#" "#" "#" "#" "#" "#" "#" "#" "#" "#" "#" "#" "#" "#" "#" "

and double quotes.
What should I set to I_DELIMITER to convert without double quotes?

[Sandra_Rossi]

Beware the <BR> in your post.

Your code better formatted:

  LR_CONVERTER = CL_RSDA_CSV_CONVERTER=>CREATE(
                    I_DELIMITER = SPACE
                    I_SEPARATOR = CL_ABAP_CHAR_UTILITIES=>HORIZONTAL_TAB ).

  LR_LINE = CL_RSDA_CSV_CONVERTER=>GET_CHAR_WORKAREA( <L_S_DATA> ).
  ASSIGN LR_LINE->* TO <L_LINE>.
  CLEAR L_ITEMS.
  LR_CONVERTER->STRUCTURE_TO_CSV( EXPORTING I_S_DATA = <L_S_DATA>
                                  IMPORTING E_DATA   = <L_LINE> ).

[matt]

Run the program in debug. When you get to the CREATE method, that calls the constructor. In the constructor you'll see that if i_delimiter is initial (i.e. space), then the default delimiter " is used instead.

It looks like you're trying to create tab delimited output. The CL_RSDA_CSV_CONVERTER class is used to create CSV files, and you can't use space as a delimiter.