First of all, you are using the code system is not commonly used code system: such as 39 yards, 128 yards, ean-13 yards, etc., special code system, the general code scanning equipment may not be open at the factory; in the case of ensuring that the usual code system, there are other code scanners on hand you can change the scanner to detect, if you can not be recognized, we must go from the bar code labels to find the problem! Common possible factors:
1, barcode production, if the proportion of the reduction is very small, the general scanner easy to not recognize
2, the barcode print out of the bar is not clear enough, the same difficult to scan
Additionally, if you are using the 39-code, the number before and after the * must be added and then assigned to the value, in order to recognize.