[Koha] Barcode error

[regina kivuyo]

hello

when staff put the item in the koha through catologue it gives the  error
message , barcode error , i opted to use accession number as barcode so as
to avoid duplicate of data in the system

 but when i search in the database i will found the item with the
callnumber , but when i try to search using callnumber or accession number
(barcode) in normal way in koha  i will not see  the item
-- 
regina