This generation rule is used to provide the values of its source except the values that can be provided by its  exclusion child source.

For example, consider an exclusion rule configured such as the exclusion list provides vowels and the source provides any alphabet characters. Then this exclusion rule will provide only the consonants of the source.


Number of attempts: The maximum number of consecutive excluded values the source can provide before stating that all source values are excluded.

Number of cached values: The number of excluded source value the rule can remember to prevent asking the exclusion source.

Default Value: The value returned but the exclusion field if all source values are excluded.

For example, if you want to exclude all the values that are located in a file, then you can use a File Extraction rule traversing that file as the excluded source.

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