You use an outbound HTTP adapter with basic authentication .

To use basic authentication for outbound HTTP connections, you must store the user and password as credentials in the security material of SAP Integration Suite. Credentials are a type of security artifact that can be used to authenticate against external systems. You can create and manage credentials in the Monitor Integrations Manage Security Security Material section of SAP Integration Suite. References: Setting Up Outbound HTTP Connections with Basic Authentication | SAP Help Portal, Security Artifact Renewal for HTTPS-Based Communication | SAP Help Portal