When you view the transformation ports, show the ports if you do not need to view the XML or JSON hierarchy. When you show the ports, you can define groups, define ports, and map elements from the method input and output to input and output ports.

A REST Web Service Consumer transformation can have multiple input groups and multiple output groups. When you create ports, create groups and add the ports to the groups. Define the ports in a group hierarchy based on the structure of the input or output hierarchy in the XML or JSON . Add a key to relate a child group to a parent group.

All groups except the lowest group in the hierarchy must have primary keys. All groups in the hierarchy except the root group must have foreign keys.

The transformation has a root input group named RequestInput. You must add a primary key to the root input group. The key must be string, bigint, or integer. You can configure any port in the root input group as a pass-through port.

To map an element to a port, click the field in the

Location

column and expand the hierarchy in the

Select Location

dialog box. Then, choose an element from the hierarchy.