For example, you can add an

Agg_

prefix to indicate that the ports were generated in an Aggregator transformation.

The following image shows the renamed generated ports in the Aggregator transformation with an

Agg_

prefix:

When you add ports of the same name to a transformation, the Developer tool appends a number to the generated port to resolve port naming conflicts. You might want to rename generated ports if the Data Integration Service will not be able to resolve port conflicts at run time. If the mapping uses a dynamic source, the Data Integration Service might encounter a port name conflict at run time. If the Data Integration Service encounters a port name conflict, it tries to rename the generated port. The mapping fails if the Data Integration Service cannot resolve the port name conflict. The mapping fails in the following situations:

An unresolved link exists from the renamed generated port to a static port.
A transformation property, such as group by port or join condition, uses the renamed generated port.

To avoid mapping failures, rename generated ports to ensure that the names are unique within each transformation.