# X_AUTH_GRANT_DISABLED

## Means

a token request named a grant this authorization server does not enable

## Typical cause

the client posted a grant_type that is not in authorizationServer({ grants })

## Fix

`authorizationServer({ grants: ['authorization_code', 'refresh_token', '<grant>'] })   # with its lifetime`

[Auth and sessions](/error-codes#auth-and-sessions)