The Option to Activate a Decision Model Is Not Displayed
If you are unable to view the option to activate your decision model, you haven't fully configured it.
The Problem
On the Decision page of your project, when you click 
on a decision model, the Activate option is not available.
Possible Causes
The decision model is in the Draft state due to either of the following reasons:
- There are validation errors in the model.
- No decision service exists in the model.
Solutions
Perform the following tasks to change the decision model's state from Draft to Configured and view the Activate option.
- Fix all errors in your decision model. See Review and Fix Errors in a Decision.
- Create at least one decision service. See Expose Decisions as Services.