Weird error message "Index out of bounds" if converting a not-date Excel value into an ABAP date field

[sandraros]

While running convert_to_table of zcl_excel_worksheet, the method excel_string_to_date of zcl_excel_common may return a weird message "Index out of bounds" which doesn't help identifying the error:

abap2xlsx/src/zcl_excel_common.clas.abap

Lines 861 to 881 in 76a39a7

	METHOD excel_string_to_date.
	DATA: lv_date_int TYPE i.
	CHECK ip_value IS NOT INITIAL AND ip_value CN ' 0'.
	TRY.
	lv_date_int = ip_value.
	IF lv_date_int NOT BETWEEN 1 AND 2958465.
	zcx_excel=>raise_text( 'Unable to interpret date' ).
	ENDIF.
	ep_value = lv_date_int + c_excel_baseline_date - 2.
	" Needed hack caused by the problem that:
	" Excel 2000 incorrectly assumes that the year 1900 is a leap year
	" http://support.microsoft.com/kb/214326/en-us
	IF ep_value < c_excel_1900_leap_year.
	ep_value = ep_value + 1.
	ENDIF.
	CATCH cx_sy_conversion_error.
	zcx_excel=>raise_text( 'Index out of bounds' ).
	ENDTRY.
	ENDMETHOD.

It happens if the et_data table contains a D type component but the corresponding Excel cell contains a value which is not a date:

  source_worksheet->convert_to_table( EXPORTING iv_begin_row = 2
                                                iv_end_row   = 4
                                      IMPORTING et_data      = three_lines_table_with_d_comp ).

Is it possible to fix the message and indicate the text which is not a valid date to help locating the error?

If possible, is it possible to improve convert_to_table to convert the maximum number of cells, to not fail and to collect all the errors in a new parameter?