What is the criteria to get a test organisation ?

What is the criteria to get a test organisation ?

Hi, What is the process / criteria to get a test organisation in Zoho Books ?

There is very little documentation and clarity about when does Zoho enable this feature. We are integrating our application with Zoho Books and wanted to create 2 organisations (for development and staging) but the zoho support did not disclose any direct way to achieve this other than reaching out to them.

Genuinely wanted to understand why it is not advertised / documented much as it is a huge value add for software teams to get onboard with API integration.