When you add a Mapping task to a workflow, you select a single mapping for the task to run. You can select any mapping that has physical data objects as input and output. When you change the mapping, the Model Repository Service tracks the effects of these changes on all Mapping tasks that include the mapping.

When you run a workflow, the workflow passes input data to a Mapping task in parameters and variables. The Mapping task uses the input data to run the mapping. When the task finishes running the mapping, the Mapping task passes output data back to the workflow in variables.

When you configure a Mapping task, you specify the input data for the task and the output data. You can set parameters that create a run-time context for the mapping task. Set task properties for the location and file name for the mapping log file. Set other properties at the mapping task level, such as the optimizer level, default sort order, and Java classpath.

After you configure a Mapping task, you can select a different mapping for the task to run.