sure/config/locales/doorkeeper.en.yml

en:
  activerecord:
    attributes:
      doorkeeper/application:
        name: 'Name'
        redirect_uri: 'Redirect URI'
    errors:
      models:
        doorkeeper/application:
          attributes:
            redirect_uri:
              fragment_present: 'cannot contain a fragment.'
              invalid_uri: 'must be a valid URI.'
              unspecified_scheme: 'must specify a scheme.'
              relative_uri: 'must be an absolute URI.'
              secured_uri: 'must be an HTTPS/SSL URI.'
              forbidden_uri: 'is forbidden by the server.'
            scopes:
              not_match_configured: "doesn't match configured on the server."

  doorkeeper:
    applications:
      confirmations:
        destroy: 'Are you sure?'
      buttons:
        edit: 'Edit'
        destroy: 'Destroy'
        submit: 'Submit'
        cancel: 'Cancel'
        authorize: 'Authorize'
      form:
        error: 'Whoops! Check your form for possible errors'
      help:
        confidential: 'Application will be used where the client secret can be kept confidential. Native mobile apps and Single Page Apps are considered non-confidential.'
        redirect_uri: 'Use one line per URI'
        blank_redirect_uri: "Leave it blank if you configured your provider to use Client Credentials, Resource Owner Password Credentials or any other grant type that doesn't require redirect URI."
        scopes: 'Separate scopes with spaces. Leave blank to use the default scopes.'
      edit:
        title: 'Edit application'
      index:
        title: 'Your applications'
        new: 'New Application'
        name: 'Name'
        callback_url: 'Callback URL'
        confidential: 'Confidential?'
        actions: 'Actions'
        confidentiality:
          'yes': 'Yes'
          'no': 'No'
      new:
        title: 'New Application'
      show:
        title: 'Application: %{name}'
        application_id: 'UID'
        secret: 'Secret'
        secret_hashed: 'Secret hashed'
        scopes: 'Scopes'
        confidential: 'Confidential'
        callback_urls: 'Callback urls'
        actions: 'Actions'
        not_defined: 'Not defined'

    authorizations:
      buttons:
        authorize: 'Authorize'
        deny: 'Deny'
      error:
        title: 'An error has occurred'
      new:
        title: 'Authorization required'
        prompt: 'Authorize %{client_name} to use your account?'
        able_to: 'This application will be able to'
      show:
        title: 'Authorization code'
      form_post:
        title: 'Submit this form'

    authorized_applications:
      confirmations:
        revoke: 'Are you sure?'
      buttons:
        revoke: 'Revoke'
      index:
        title: 'Your authorized applications'
        application: 'Application'
        created_at: 'Created At'
        date_format: '%Y-%m-%d %H:%M:%S'

    pre_authorization:
      status: 'Pre-authorization'

    errors:
      messages:
        # Common error messages
        invalid_request:
          unknown: 'The request is missing a required parameter, includes an unsupported parameter value, or is otherwise malformed.'
          missing_param: 'Missing required parameter: %{value}.'
          request_not_authorized: 'Request need to be authorized. Required parameter for authorizing request is missing or invalid.'
          invalid_code_challenge: 'Code challenge is required.'
        invalid_redirect_uri: "The requested redirect uri is malformed or doesn't match client redirect URI."
        unauthorized_client: 'The client is not authorized to perform this request using this method.'
        access_denied: 'The resource owner or authorization server denied the request.'
        invalid_scope: 'The requested scope is invalid, unknown, or malformed.'
        invalid_code_challenge_method:
          zero: 'The authorization server does not support PKCE as there are no accepted code_challenge_method values.'
          one: 'The code_challenge_method must be %{challenge_methods}.'
          other: 'The code_challenge_method must be one of %{challenge_methods}.'
        server_error: 'The authorization server encountered an unexpected condition which prevented it from fulfilling the request.'
        temporarily_unavailable: 'The authorization server is currently unable to handle the request due to a temporary overloading or maintenance of the server.'

        # Configuration error messages
        credential_flow_not_configured: 'Resource Owner Password Credentials flow failed due to Doorkeeper.configure.resource_owner_from_credentials being unconfigured.'
        resource_owner_authenticator_not_configured: 'Resource Owner find failed due to Doorkeeper.configure.resource_owner_authenticator being unconfigured.'
        admin_authenticator_not_configured: 'Access to admin panel is forbidden due to Doorkeeper.configure.admin_authenticator being unconfigured.'

        # Access grant errors
        unsupported_response_type: 'The authorization server does not support this response type.'
        unsupported_response_mode: 'The authorization server does not support this response mode.'

        # Access token errors
        invalid_client: 'Client authentication failed due to unknown client, no client authentication included, or unsupported authentication method.'
        invalid_grant: 'The provided authorization grant is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client.'
        unsupported_grant_type: 'The authorization grant type is not supported by the authorization server.'

        invalid_token:
          revoked: "The access token was revoked"
          expired: "The access token expired"
          unknown: "The access token is invalid"
        revoke:
          unauthorized: "You are not authorized to revoke this token"

        forbidden_token:
          missing_scope: 'Access to this resource requires scope "%{oauth_scopes}".'

    flash:
      applications:
        create:
          notice: 'Application created.'
        destroy:
          notice: 'Application deleted.'
        update:
          notice: 'Application updated.'
      authorized_applications:
        destroy:
          notice: 'Application revoked.'

    layouts:
      admin:
        title: 'Doorkeeper'
        nav:
          oauth2_provider: 'OAuth2 Provider'
          applications: 'Applications'
          home: 'Home'
      application:
        title: 'OAuth authorization required'