Operation Manual

Chapter 5 – Project Setup
72
Setting a mask syntax
The barcode masks are defined according to a mask syntax. They
are used to validate the values detected on the documents, such as,
for example, the index field values.
A mask is made of characters that correspond to different values:
A = alphabetic character (from A to Z and a to z)
X = alphanumeric character
9 = a digit (from 0 to 9)
? = any character
E.g.: if the value mask is AA99: the value is valid if it starts with
two alphabetic characters followed by two digits.
Some portion of the mask may have to match a literal expression.
This expression must then be written between quotes.
E.g.: if the value mask is AA"CONTRACT"99, the value is valid
if it starts with two alphabetic characters followed by the literal
expression "CONTRACT", followed by two digits.
For each character, you can also specify a counter, i.e. the number
of characters that must be present in the value.
E.g.: ?(3) means up to 3 characters.
E.g.: A(3) means up to 3 alphanumeric characters.
E.g.: A(3)"CONTRACT"99 the value is valid if it starts with up to
three alphabetic characters followed by the literal expression
"CONTRACT", followed by two digits.
Number type mask characters
9 = numeric
E.g.: 9(3) or 999 => 453 or 123 or 657, etc.
Date type mask characters
D = numeric