Hi @Seller_XTvu5fPJCDEKM, according to this help page, "With respect to alphanumeric characters used in the English language (for example a - z, A - Z, 0 - 9), one byte corresponds to one character. However, more complex characters, such as umlauts in German (for example, ä), can correspond to two or more bytes per character.

As a result, estimating the character count can be more complex than estimating the bytes count. For this reason, the Generic keyword field in Seller Central stops accepting inputs when the byte limit is reached."

Let me know if you have other questions.

-Blake