> For the complete documentation index, see [llms.txt](https://helps.ptengine.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://helps.ptengine.com/en/faq/tag-and-domain/excluded-domains.md).

# About Domains Out of Measurement Scope

Domains that fall under the following two categories cannot be configured.

**1. Japanese Language Domains**

Ptengine does not officially support the measurement of Japanese language domains. If you specify a Japanese language domain as a measurement target, please note the following:

1. If the domain of the target measurement site is a Japanese language domain, measurement cannot be performed correctly.
2. If the main domain consists of alphanumeric characters and the subdomain is in Japanese, measurement itself can be performed, but there is a risk that custom events may not be measured correctly.

**2. Domains Containing Special Characters**

If a domain contains symbols that cannot be recognized as a domain, the domain cannot be configured.

If a domain contains any of the following special characters, you may receive the error message "Please enter the correct page URL":

– . : ? ' > < " / \_ % \* ) ( ! \~ & =+ | ^ $ \\