The bar width reduction must be smaller than ^0.

UPC-E code can contain only numbers

UPC-E code must have 8 number caracters

UPC-A code can contain only numbers

UPC-A code must have 12 number caracters

EAN-8 code can contain only numbers

EAN-8 code must have 8 number caracters

Wrong code: checksum failed!

EAN-13 code can contain only numbers

EAN-13 code must have 13 number caracters