Un-existing Data Format Used
The Un-existing Data Format Used analyzer detects when a function instance references a data format that no longer exists.
This typically happens when a data format is deleted after function instances that used it were already configured, for example, a "Fetch data" or "Create data" step that still points to the deleted format.
How to fix it
Open the flagged function instance and select a valid data format, or remove the step if it's no longer needed.
Severity
Major/Bug - the action will fail at runtime when it tries to use the missing data format.