This barcode is a variable length barcode that can encode up to 15 numeric digits. Checksum generation is dependent on the value of the checksum parameter. The following table indicates the value of the checksum property and the type of checksum created. Setting, Description, 0, one modulus 10 checksum, 1, two modulus 10 checksums, 2, one modulus 11 checksum/one modulus 10 checksum.