Branch shapeThe branch shape allows you to add shapes to multiple distinct paths in a process flow, which are executed sequentially. Paths are executed one at a time, in the configured sequence, using the same incoming payload.
For complex scenarios, branching means you can split the logic in your flow, making it easier to build, understand, and manage. 
The branch shape
created_by, created_at and flow_run_id fields. * wildcards in a mapping field reference could result in an error. 204 (no content) response wasn't sent if the callback shape received an empty payload.