Hii....
You have to make use of structure ssfctrlop to display smartform in login language. add this code in report.
Structure ssfctrlop is used to display smartform as per Login language.
data : int_kna1 like kna1 occurs 0 with header line,
w_cparam type ssfctrlop.
w_cparam-langu = sy-langu.
call function fm_name
exporting
control_parameters = w_cparam
Login language will be passed to Control Parameters and smartform will be displayed as per the login language. Hope this will solve your problem. Reward if useful 😊
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