The pushdown operation copies any reference table data, content set data, and identity population data that the mapping reads to the cluster. After the mapping runs, the cluster deletes the reference data that the pushdown operation copies with the mapping.

The pushdown operation does not copy address validation reference data. If you push a mapping that performs address validation, you must install the address validation reference data files on each node that runs the mapping. The cluster does not delete the address validation reference data files after the address validation mapping runs.