Multiple-occurring nodes and complex nodes define hierarchy levels in the SOAP message structure. The Developer tool adds keys to the levels to create parent-child relationships between them. All levels in the hierarchy, except for the leaf levels, have a primary key. Each child level has a foreign key to a parent level. The keys that appear in the SOAP message hierarchy do not appear in a SOAP message instance. The Data Integration Service requires values in the keys to relate levels of the data when it generates the SOAP message.

The

Location

column contains the group name and input port that contains the data for an element in the SOAP message. The

Location

column is empty until you map an input port to the node.

In the preceding figure, the SOAP message contains a single instance of customer details and orders. The Orders group contains a multiple-occurring element called Order. The SOAP message hierarchy has the following levels related by key:

The Response level represents the root of the response message. The Data Integration Service requires this level to attach headers to the SOAP message.

The GetCustomerDetailsResponse level is the root of the message.