Missing Output
The Missing Output analyzer detects function instances that produce a result but haven't been given a variable name to store it in.
When a function produces output (for example, a fetched record or a calculated value), you need to give that output a name so it can be used later in your logic. If no name is provided, the result is lost and subsequent steps cannot reference it.
How to fix it
Open the function instance and fill in the output variable name. You'll find this in the output section of the function configuration.
Severity
Major/Bug - any step that tries to use this output will fail or receive nothing.