The name of your app/brand which you are advertising.
For app names, TikTok supports 4-40 English characters (2-20 Chinese/Japanese characters, depending on different models and operating systems. Bear in mind that long strings of text can be at risk for being cut off on different screen displays.)
For brand names, TikTok supports 2-20 English characters (1-10 Chinese/Japanese characters). Emojis cannot appear in the app or brand name. Punctuation and spaces will also occupy characters.