The HTTP 200 OK status response code is the standard indicator that a request has succeeded. In the context of an API call, a 200 response confirms that the server has successfully processed the client's request and is returning the requested payload or a confirmation of the action. While other 2xx codes also indicate success, 200 is the most common and general-purpose success code used for GET, PUT, or POST requests. The type of API provider ("Internet") does not alter the fundamental meaning of standard HTTP status codes.

A. 203: This is a success code (Non-Authoritative Information), but it specifically means the request was successful but the returned metadata is not from the origin server. 200 is the standard success code.

B. 403: This is a client error code (Forbidden). It indicates that the server understood the request but refuses to authorize it, meaning the request failed due to insufficient permissions.

D. 401: This is a client error code (Unauthorized). It indicates that the request failed because it lacks valid authentication credentials for the target resource.

1. Official Vendor Documentation (SAP Help Portal): In the context of SAP API Management policies

the documentation consistently refers to the 200 status code as the indicator of a successful flow. For example

fault rules are often configured to trigger on non-2xx responses

implicitly defining 2xx (and primarily 200) as the success path.

Source: SAP Help Portal

API Management

"Predefined Policies"

section on "Assign Message policy". The examples often show setting response variables in a successful (200 OK) flow.

2. Internet Engineering Task Force (IETF) Standard: The definitive standard for HTTP status codes

which SAP's products adhere to

explicitly defines the 200 code.

Source: IETF RFC 7231

"Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content"

Section 6.3.1. It states

"The 200 (OK) status code indicates that the request has succeeded."

3. Official Vendor Documentation (SAP Help Portal): Troubleshooting guides for SAP Cloud Integration and API Management use the 200 OK status as the baseline for a successful transaction when analyzing message monitoring or traces.

Source: SAP Help Portal

SAP Integration Suite

"Monitoring Integrations"

section on "Message Monitoring". Successful message logs will display an HTTP 200 status.