Part 1: Create a service flow project and a top-level flow
In this part you will create a service flow project and
a top-level flow, create input,
output, and variable data messages, and associate an interface operation
with the flow.
Step 1.3: Create the interface operation for the top-level flow
In this step you will create an interface operation, associate
the interface operation with the top-level flow, add two Assign nodes and two Invoke nodes to the top-level flow, and connect
the nodes of the flow in the order in which you want them to be performed.