A specific value cannot be present elsewhere

This rule is used to determine if a value does not exist elsewhere, it is more advanced than the Item must not have been entered elsewhere, because it uses a second value as a reference to look up the data. For example, in a manufacturing test environment, a unit may have to have failed an initial first test in a different bloc in order to be repaired. So in this case the serial number of the unit is checked, and the value we are checking is "Passed". The rule would fail if "Passed" was the result.

Rule Parameters

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