$record->field($tagfield)->update($tagsubfield => $barcodevalue);

                if ( C4::Context->preference("autoBarcode") eq 'hbyymmincr' && $i > 0 ) { # The first copy already contains the homebranch prefix

                    # This is terribly hacky but the easiest way to fix the way hbyymmincr is working

                    # Contrary to what one might think, the barcode plugin does not prefix the returned string with the homebranch

                    # For a single item, it is handled with some JS code (see cataloguing/value_builder/barcode.pl)

                    # But when adding multiple copies we need to prefix it here,

                    # so we retrieve the homebranch from the item and prefix the barcode with it.

                    my ($hb_field, $hb_subfield) = GetMarcFromKohaField( "items.homebranch" );

                    my $homebranch = $record->subfield($hb_field, $hb_subfield);

                    $barcodevalue = $homebranch . $barcodevalue;

                }

                $record->field($tagfield)->update($tagsubfield => $barcodevalue);