Generating an Express Match Key
Enable the Generate Express Match Key option and click Add to define an express match key to be used later in the dataflow by an Intraflow Match stage or an Interflow Match stage.
If the Generate Express Match Key option is enabled and the Express match key on option is selected in a downstream Interflow Match stage or Intraflow Match stage, the match attempt is first made using the express match key created here. If two records' express match keys match, then the record is considered a match and no further processing is attempted. If the records' express match keys do not match, then the match rules defined in Interflow Match or Intraflow Match are used to determine if the records match.