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In SAP API Management, the "Resources" tab of an API proxy lists endpoints (e.g., /get, /post). Let’s diagnose why it’s empty:

Step 1: Resources Tab- Displays operations/paths from the API spec or backend discovery.

Step 2: Evaluate Options-

A. Plain REST API: A REST API (e.g., via URL or OpenAPI) typically provides paths (e.g., /users), populating the tab.

B. OData API: OData services (e.g., /sap/opu/odata/sap/SERVICE) use entity sets (e.g., ProductSet), not REST-style resources. SAP API Management doesn’t auto-parse these as individual resources unless an OpenAPI spec is provided.

C. API Provider: A provider (e.g., SAP Gateway) can expose discoverable services; resources depend on the spec, not the provider alone.

D. SAP Graph API: SAP Graph provides RESTful endpoints, which should appear as resources.

Step 3: OData Behavior- When creating a proxy from an OData source (e.g., via provider or URL), without an OpenAPI overlay, the tab shows a single base path (e.g., /SERVICE), not entity-specific resources.

Step 4: Official Verification- The SAP Help Portal’s "Creating API Proxies" notes that OData sources often require manual resource definition or an imported spec, unlike REST APIs, which auto-populate.

Conclusion: Option B is 100% verified per SAP documentation.References:

SAP Help Portal: "Creating API Proxies" (SAP API Management)

SAP Help Portal: "OData API Proxy Configuration"

A synchronous call in SAP Cloud Integration implies a request-reply pattern, where the sender waits for a response. Let’s evaluate the adapters:

Step 1: Synchronous vs. Asynchronous- Synchronous adapters support immediate responses (e.g., HTTP-based protocols), while asynchronous ones (e.g., file or message queues) do not.

Step 2: Analyze Options-

A. OData: Based on HTTP, the OData adapter supports request-reply calls (e.g.,querying an OData service), making it synchronous.

B. sFTP: Used for file transfers, sFTP is asynchronous; it doesn’t provide immediate responses.

C. Mail: Email protocols (e.g., IMAP, SMTP) are asynchronous, not suited for synchronous HTTP calls.

D. AMQP: A messaging protocol for queues (e.g., RabbitMQ), inherently asynchronous.

Step 3: HTTP API Context- The question specifies a "remote HTTP API," and OData, being HTTP-based, fits perfectly for synchronous RESTful interactions.

Step 4: Official Source- The SAP Help Portal’s "Configuring OData Receiver Adapter" documentation confirms that OData supports synchronous request-reply operations over HTTP.

Conclusion: Option A (OData) is the verified answer. (Note: The HTTP adapter itself could also apply, but it’s not listed; OData is the best match among the given options.)References:

SAP Help Portal: "Configuring OData Receiver Adapter" (SAP Cloud Integration)

SAP Help Portal: "Adapter Overview"