in OO Alv toolbar, sum and subsum buttons are disable as default, WHY ?

[Former Member]

i want to enable sum and subsum buttons in alv toolbar. However, as default those buttons are disable. How can i solve ?

[Former Member]

There may be no summable fields in your output. Thats why those buttons are disabled.

[Former Member]

i defined ref_table and ref_field for quantity field in fieldcat such as

ls_fcat-ref_table = 'V03RB'.

ls_fcat-ref_field = 'KWMENG'.

so i solve it. thank you for your help.