Is it possible to register the Japanese API name in "API Name" of "Add API" Details?
Maximum number of characters is 255 or less
Is there any restriction other than that?
Registration of Japanese API names is probably possible.
However, Portal 4.0 is not officially localized.
Therefore, it is recommended to use single-byte characters.
There is no limit other than the maximum number of characters.
However, the API name is used for the URL.
Therefore, we recommend registering the API name with the usable characters in the URL.