A Listbox in SAP refers to a dropdown list UI element that allows users to select one value from a predefined set of values. *&---------------------------------------------------------------------* *& Report ZREP_LCLCLASS *& *&---------------------------------------------------------------------* *& *& *&---------------------------------------------------------------------* REPORT zrep_lclclass. PARAMETERS: p_color AS LISTBOX VISIBLE LENGTH 20 USER-COMMAND uc. INITIALIZATION. DATA: lt_list TYPE vrm_values, ls_list TYPE vrm_value. ls_list-key = 'R'. ls_list-text = 'Red'. APPEND ls_list TO lt_list. ls_list-key = 'G'. ls_list-text = 'Green'. APPEND ls_list TO lt_list. ls_list-key = 'B'. ls_list-text = 'Blue'. APPEND ls_list TO lt_list. CALL FUNCTION 'VRM_SET_VALUES' EXPORTING id = 'P_COLOR' values = lt_list. Output: execute the Code.