Your microflow has ‘Status’ as an input parameter. But on your page it is not encompassed by a dataview/listview/templategrid or something which passes an Status object to your microflow.
If you don't need a Status object passed to your microflow. Remove the input parameter in your microflow and the error is gone.
Looking at your microflow you do want to use a Status object. So you need to either create it in your microflow (beware of continuously creating objects with a DS microflow every time the page loads) or make sure an object of the entity Status has already been passed to your microflow.
You might want to take a look at the learnings to get used to how microflows and pages work in mendix
Not sure about what you’re trying to accomplish, but I think you will be fine if you make these two changes to the microflow:
- remove the inputparameter 'Status’
- replace the “Change ‘Status'” by a “Create 'Status'”