Power Fx function
Change data
Defaults
Blank-row template of a data source.
What it does
Blank-row template of a data source.
The job: Behavior functions that create, edit, or delete records — they run on events like a button OnSelect.
How to use Defaults
Start from the task, not the alphabet. If you are shaping rows for a gallery, reach for Defaults alongside the other data functions in its group; if you are saving, navigating, or changing state, use it on an event such as a button OnSelect rather than in a display property. When a formula misbehaves, check for a blank value where you expected text, then confirm the behaviour against the examples in the Power Fx function reference hub.
New to the language itself? Read What Is Microsoft Power Fx? first, then come back here when you need this specific tool.