When you select the

Mapping Flow

option, the Data Integration Service allows the Target transformation to override ports of the Write transformation with all the updated incoming ports from the pipeline mapping and loads the target file with the ports at runtime.

The Data Integration Service creates the target files dynamically based on the metadata of the incoming ports from the pipeline mapping.

To enable a dynamic mapping using the

Mapping Flow

option, select the value of the

Columns defined by

property as

Mapping Flow

in the

Ports

tab in the Write transformation.