You can reduce the number of output groups for a complex request message by marking fields that you want to pack when you configure the field mapping.
You can pack multiple instances of a single element or a hierarchy of elements into one field. A packed icon displays next to elements marked to be packed, indicating that you can pack the entire element into one output field when you check that element.
Fields can come from the source that are already marked for packing. You can unpack fields by clicking the pack icon. You cannot select fields that are descendants of packed fields.
The following image shows the packed Phone_Data element:
When you run the mapping, the agent packs the element and its descendants into a single XML string.
The following sample table shows the Worker output in the target file after you run the task: