SYMPTOM:
The user is unable to drill to an object even though it is the destination of a specified drill path in Strategy Developer 9.x and 10.x..
STEPS TO REPRODUCE:
Follow the steps below to reproduce this issue in the Strategy Tutorial project:


CAUSE:
A hidden object, by definition, is an object that can't be seen by end users. If the object being drilled to is hidden, it cannot be seen as an option for drilling.
ACTION:
To resolve this issue, uncheck the 'Hidden' property of the drill destination object.
The 'Hidden' property is found by right-clicking the object (in this case 'Customer Analysis' Template) and select 'Properties'. On the bottom left corner, deselect 'Hidden', as shown below:

Users will now be able to see the template as a drill option.