Validation on Material number

Question

Hi , I am retrieving material numbers from a excel sheet into an internal table. Now I want to check this internal table against MARA table to see if the entered material numbers are valid or not. How to achieve this ? I mean what is the most efficient way.
Also , if I enter a value in a screen input field how can I check its validity with material number sin MARA
Thank you .

Answer 1

Hello Krish,
How you know which material number is wrong one unless if you use error log table.
See the below logic :
You can write simple logic :
Assume that your internal table is itab.
error log internal table
data : begin of itab1 occurs 0,
          matnr(18) type c,
          text(50) type c,
         end of itab1.
loop at itab.
CALL FUNCTION 'CONVERSION_EXIT_MATN1_INPUT'
EXPORTING
INPUT = ITAB-MATNR
IMPORTING
OUTPUT = ITAB-MATNR
EXCEPTIONS
LENGTH_ERROR = 1
OTHERS = 2.
select single * from mara into mara
                                 where matnr = itab-matnr.
if sy-subrc ne 0.
itab1-matnr = itab-matnr.
itab1-text = 'Material does not exits'.
append itab1
clear itab1.
endif.
endloop.
Thanks
Seshu