SAP Knowledge Base Article - Preview

3571927 - OAuth2: Authorization Code flow "authorize" service does not work - "Service DEFAULT_HOST has no handler class or no existing one"

Symptom

An error "Service DEFAULT_HOST has no handler class or no existing one" is encountered while testing the "authorize" service in SICF, or when triggering an OAuth 2 Authorization Code flow.


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Environment

SAP NetWeaver Application Server for SAP S/4HANA
ABAP Platform

Product

SAP NetWeaver Application Server for ABAP all versions ; SAP S/4HANA all versions

Keywords

OAuth 2.0, OData API, SAP S/4HANA, SICF, Service DEFAULT_HOST, handler class, authorization, authentication, error, OAUTH2_AUTH_UI, authorize, /default_host/sap/bc/sec/oauth2, /default_host/sap/bc/ui5_ui5/sap/OAUTH2_AUTH_UI. , KBA , BC-SEC-LGN-OA2 , OAuth 2.0 for ABAP , Problem

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