Do it exist a FM to check possibility of convertion between different type?

Question

Hi all,
   We have usually met the problem of DUMP when moving or writing a data type of a variable to an other variable which haven't the same data type as data type of moved variable.
   For example:
       - var01 type char10 with content "char_test".
       - var02 type QUAN.
       - MOVE var01 TO var02 => DUMP (because program can't convert "char_test" into QUAN type).
       (we can use instruction WRITE var01 TO var02 to avoid a DUMP, but after, when we use this var02 to compute => DUMP also occurs).
So could you please tell me if it exist a Function Module in ABAP to check the possibility of conversion between different data type?
Thanks a lot in advance,
Vinh Vo

Answer 1

Dear Vinh,
Field symbol should solve your problem. In case that does not work, then as per your requirement you can check for conversion using a try-catch block. The code below should give you an idea.
DATA: var01 TYPE char10 VALUE 'char_test',       " CHAR or any other type
           var02 TYPE quan1.                                   "Field of type QUAN
TRY.
    MOVE var01 TO var02.
  CATCH cx_sy_conversion_no_number.
    WRITE 'Steps in case conversion is not possible'.
ENDTRY.
WRITE / var02.
The above code will not dump in case of conversions to QUAN. In case a conversion to any other format is required, there will be a similar errors. Please let me know if you need any further help.
Regards,
Nimish