Why is it so hard to get a Job Description?

I don’t get it. Every time I ask for a job description, I get pushback.
Seems to me if you have gone to all of the activity to get a position posting approved, you at some point created at least a bullet-point-list of what you want. Give me that.
In the absence of actual job descriptions, I will go with the following:

The Scrum Master’s job is to work with the Scrum Team and the organization to increase the transparency of the artifacts.

This work usually involves learning, convincing, and change.

Transparency doesn’t occur overnight, but is a path.