Developer Transformation Guide

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Match Transformation Input Ports

The predefined input ports contain the metadata that the transformation requires for match analysis.

After you create a Match transformation, you can configure the following input ports:

SequenceId: Unique identifier for each record in the mapping source data set. Every record in an input data set must include a unique sequence identifier. If a data set contains duplicate sequence identifiers, the Match transformation cannot identify duplicate records correctly. Use the Key Generator transformation to create unique identifiers if none exist in the data.; When you create an index data store for identity data, the Match transformation adds the sequence identifier for each record to the data store. When you configure the transformation to compare a data source with the index data store, the transformation might find a common sequence identifier in both data sets. The transformation can analyze the sequence identifiers if they are unique in the respective data sets.
GroupKey: Key value that identifies the group to which the record belongs.; To improve mapping performance, configure the GroupKey input port and the output port that connects to it with the same precision value.