You can use a subflow in the middle of a flow to perform processing that you want to make reusable in other flows. In effect, the subflow becomes a custom stage in your flow.
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At the end of the flow, add an Output stage.
This allows the data from the subflow to be sent to the parent flow.
For example, you might want to create a subflow that performs deduplication using certain settings in each stage so that you can use the same deduplication process in multiple flows. To do this you could create a subflow like this:
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Connect the subflow to the flow stage you want.
For example, you could use the deduplication subflow within a flow that performs geocoding so that the data is deduplicated before the geocoding operation:
