Google SDTT error: “All values provided for http://www.example.com/ must have the same domain.”

Question

When I copy/paste JSON-LD example from Google Documentation (code-snippet below) I get an error in the Structured Data Testing Tool:

http://www.

Answer 1

They can't prepopulate the examples in their documentation with the URL of the site you are going to write code for. They don't know what site you are writing code for.