How to get rid of dumps

Generally if any exception occurred it will go to dump immediately in a program, then we will process this through the tcode ST22(dump analysis). Here I am trying to convert this dump into an error message or some text statement.
For this you need to call this statement...

RECEIVE RESULTS FROM FUNCTION 'function module'

Check this example program....

REPORT ztests.

PARAMETERS:p_file LIKE rlgrap-filename .

DATA: v_file TYPE string.

DATA: BEGIN OF itab OCCURS 0,
name(23) TYPE c,
END OF itab.

DATA: errormessage TYPE char50.

v_file = p_file.

CALL FUNCTION 'GUI_UPLOAD'
EXPORTING
filename = v_file
filetype = 'ASC'
has_field_separator = ' '
TABLES
data_tab = itab.


RECEIVE RESULTS FROM FUNCTION 'GUI_UPLOAD'
EXCEPTIONS
file_open_error = 1
file_read_error = 2
no_batch = 3
gui_refuse_filetransfer = 4
invalid_type = 5
no_authority = 6
unknown_error = 7
bad_data_format = 8
header_not_allowed = 9
separator_not_allowed = 10
header_too_long = 11
unknown_dp_error = 12
access_denied = 13
dp_out_of_memory = 14
disk_full = 15
dp_timeout = 16
OTHERS = 17 .
.
CASE sy-subrc.
WHEN 0.
errormessage = 'Data Loaded'.
WHEN 1.
errormessage = 'FILE_OPEN_ERROR'.
WHEN 2.
errormessage = 'FILE_READ_ERROR'.
WHEN 3.
errormessage = 'NO_BATCH'.
WHEN 4.
errormessage = 'GUI_REFUSE_FILETRANSFER'.
WHEN 5.
errormessage = 'INVALID_TYPE'.
WHEN 6.
errormessage = 'NO_AUTHORITY'.
WHEN 7.
errormessage = 'UNKNOWN_ERROR'.
WHEN 8.
errormessage = 'BAD_DATA_FORMAT'.
WHEN 9.
errormessage = 'HEADER_NOT_ALLOWED'.
WHEN 10.
errormessage = 'SEPARATOR_NOT_ALLOWED'.
WHEN 11.
errormessage = 'HEADER_TOO_LONG'.
WHEN 12.
errormessage = 'UNKNOWN_DP_ERROR'.
WHEN 13.
errormessage = 'ACCESS_DENIED'.
WHEN 14.
errormessage = 'DP_OUT_OF_MEMORY'.
WHEN 15.
errormessage = 'DISK_FULL'.
WHEN 16.
errormessage = 'DP_TIMEOUT'.
WHEN 17.
errormessage = 'OTHERS'.
ENDCASE.

MESSAGE e000(00) WITH errormessage .
With this in the report program we will get an error message instead of a dump when the exception raised.