Wasp Barcode Maker - Manual (Page 10)

Illegal and Incomplete Barcode Messages - If you enter a
barcode value that is not supported by a particular barcode
symbology, Barcode Maker will display a message letting you
know that the barcode value is either illegal or incomplete. For
example, the Interleaved 2 of 5 barcode symbology requires
numbers. If you include a letter in the barcode value, you will
receive a message telling you that there is an illegal character in
your barcode. An incomplete barcode is one that does not
include the required number of characters. For example,
PostNet, which is used to barcode zip codes, requires 5, 9 or 11
digits. If the barcode you enter only has 4 digits, you will
receive an incomplete character message.
Special and Nonprintable Characters: Certain barcode
symbologies use Special or Nonprintable Characters. For
example, Code 3 of 9 Full ASCII can be extended to an 128
character symbology (full ASCII) by combining one of the
special characters ($, /, %, +) with a letter (A-Z) to form the
characters that are not present in the standard Code 3 of 9
symbology. In standard Code 3 of 9 a lowercase "a" cannot be
represented. In Code 3 of 9 Full ASCII a lowercase "a" is
represented as "+A". See Barcode Symbologies in the Barcode
Maker online help for more information about the use of Special
and Nonprintable Characters in barcodes.
Check Digit - Check digit is a character included within a
barcode symbol that is used to perform a mathematical check
to ensure the accuracy of the scanned data. It checks that the
barcode meets the specifications set for the barcode
symbology. Not all barcode symbologies support check digit. If
you select a symbology that does not support check digit,
Barcode Maker makes check digit unavailable to you on the
toolbar or in the Main Window. See Barcode Symbologies in the
Barcode Maker online help for more information on barcode
symbology specifications.
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Wasp Barcode Maker Quick Start Guide