StatusSubCode
From King Arthur's Gold Wiki
This page documents the various subStatusType codes which accompany standard HTTP status codes in some responses.
There is a section for each HTTP status code which is sometimes accompanied by a subStatusType code.
403
10901: Account not activated. This may be switched to a 401 failure.
10902: Account is flagged with a global ban. This should always be accompanied by banExpiration and banReason