User Guide

Ensuring Data Quality
Controlling logic
Very often certain restrictions apply the data to be entered into
the fields. For example, numbers may have to belong to a certain
interval. This can also be checked by validation rules, and if the rec
ognized data do not meet the imposed requirements, the rule will
report an error. Here are some examples of such validation rules:

Normalize and check dates. This rule
(a) validates the date,
(b) converts the date into a predefined format,
(c) checks that the date falls within a predefined time period.
The first step will discard such dates as 32/45/199, the second
step will arrange the figures in the required order, e.g. dd/mm/yyyy,
and the third step will make sure that the date falls within the speci
fied interval.
Date validation rule.
Check sum validation in ABBYY FormReader.
 Check sums. If there are several digits on the form and a field
contains their sum total, we may add an additional validation
rule that will make sure that the recognized figures add up.