When trying to publish or update a manual, a message saying "Invalid character string included" is displayed. What should I do?

Please check if the title or description contains any special characters that are not supported, such as:

• Emojis (e.g., 👈, 🆗, 🍀)
• Environment-dependent characters, device-dependent characters (e.g., 𝅘𝅥𝅮, 🄐, 🈀)
• Old and new character forms (e.g., 𠮷, 𡧃, 𦿶)

If any of these are included, replace them with different characters and try "Publishing" or "Updating" again.

※Even if the content contains emojis, environment-dependent characters, device-dependent characters, old and new character forms, if the "Invalid character string included" message is not displayed, you can use them without any problem.