You can create multiple input groups and multiple output groups in a Custom transformation. You must create at least one input group and one output group. To create an input group, click the Create Input Group icon. To create an output group, click the Create Output Group icon. You can change the existing group names by typing in the group header. When you create a passive Custom transformation, you can only create one input group and one output group.
When you create a port, the Designer adds it below the currently selected row or group. A port can belong to the input group and the output group that appears immediately above it. An input/output port that appears below the input group it is also part of the output group. An input/output port that appears below the output group it is also part of the input group.
Groups that share ports are called a coupled group. Adjacent groups of opposite type can share ports. One group can be part of more than one coupled group. For example, in the figure in Step 1. Create the Custom Transformation
, InputGroup1 and OutputGroup1 is a coupled group that shares ORDER_ID1
If the transformation has a Port Attribute Definitions tab, you can edit the attributes for each port.