Indexing an output
When you know the number of objects to generate for each map execution, index the number of occurrences of that output object. To index an output is to generate a specific number of occurrences of that output.
Indexing an output adds an output object is added to the output card. This output object has the index number in square brackets. For example, [1].
The index number identifies the occurrence of the object. The index number [1] indicates the first occurrence. The index number [2] indicates the second occurrence, and so on. After you have indexed an output, you can enter a map rule for that indexed output. If you have indexed a group, you can then expand the group and add map rules at the component level.
Map to the first occurrence of an indexed object by dragging that object from the input card to the map rule of the item on the output card. Define the second occurrence of the output by dragging the desired object from the input card to the map rule of the item on the output card. If you do not want a third indexed data object, enter the map rule = NONE.