Check if the upper limit of the number of characters to be registered in Value is exceeded. When you register a TXT record, you are to enclose a value of Value in double quotes ("). Strings enclosed in double quotes (") are limited to a maximum of 255 characters.

To register 256 or more characters in Value, refer to "Q. How can I describe a value consisting of 256 or more characters to register it in Value in a TXT record?"