Hi Rahul,
This dump is because of Feildsymbols.
Please check whether fieldsymbol is assigned or not before passing value to another variable or fieldsymbol as per your requirement.
Refer to below example.
Assign (c_txt) to <fs_txt>
If <fs_txt> is assigned.
Assign <fs_txt> to <fs_txt1> .
endif.
Thanks,
Pavani.