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Definition: 

A logical condition or a restriction to the value of a data item or a data group which must not be met if the data is to be considered correct. In various connections other terms are used, e.g. Y-rule.

Source: 

UNECE Data Editing Group

See also:

Conflict Rule (rejection rule)

Last edit:

05 Dec 2013

(Fiona Willis-Núñez)