Ntk and Ntt are a set of parameters used for record search which act as a filter (not a prefilter).

Therefore, when used with the Nrs parameter, the resulting record set will be an intersection of the results of the Nrs parameter and the Ntk/Ntt parameters. There are two main advantages of using these parameters with the Nrs parameter:

In addition, you can use other parameters that depend on Ntk, such as the Ntx parameter to specify a match mode or a relevance ranking strategy.

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