In the Connector Reference guide, Chapter 18 (SCIM Connector), the documentation only mentions BASIC or OAUTH as the authenticationMethod options:
The authenticationMethod can be either OAUTH or BASIC.
However later on in the chapter, the documentation goes on to describe three possible values for authenticationMethod:
Options are BASIC (username/password), OAUTH (Client id/secret) or TOKEN (static token).
The former section should be updated to include the TOKEN option, so as to prevent confusion and present all possible values.