Deleting a Parameter of a Decision Entity
You can delete the parameter of a decision entity.
To delete a parameter of a decision entity:
1. Right-click the parameter in the Rules Explorer view and select 
Delete from the context menu. Note:
You are prompted to save unsaved changes, or to cancel the procedure. If you confirm, the decision entity is saved, even if you cancel the procedure at a later stage.
2. In the Confirm Parameter Delete dialog box, click Yes to confirm the deletion, or No to end the procedure and discard the changes.
Note:
You cannot delete the only parameter of a decision entity, or a parameter that is used in the only existing condition or result of a decision entity.
The parameter and all components that are associated with it are deleted from the file system.