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Finally it is also possible to define validation rules based on the number of doubtful values in the input. It is important to note that missing values and unrealiable values found in the input are also counted as doubtfull doubtful values. It is even possible to define validation rules based on a combination of an allowed percentage of unreliable/missing values and doubtful values. The sequence of applying the rules is also in this case the order in which the rules are configured. The first rule which applies to the
current situation is used.
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