SAP Configuration - Endpoint Configuration (SM59)

SAP Configuration - Endpoint Configuration (SM59)

Endpoint Customization

SAP uses the Remote Function Call (RFC) to establish connections with external systems. This RFC serves as an exclusive interface for communication between SAP systems and external applications, enabling SAP to function as both a client and a server in familiar RFC scenarios.

To customize this asset in SAP, it is crucial to know the parameters governing the web connection to which SAP will be linked. Essential details such as the URL, port, and RFC type are required for its successful integration.

📋 Prerequisites: Before starting, make sure you have the host, port, path prefix, and credentials of the destination created before in the Smart Gateway.


Step 1 — Access Transaction SM59 in SAP

Go to the Transaction field, enter SM59, and press Enter or click the checkmark.

SAP transaction field with SM59 entered


Step 2 — Locate HTTP Connections

Expand the HTTP Connections to External Server node.

  • If you already have an RFC created, select it and skip to Step 5 to make any necessary changes.
  • If you need to create one, continue with the next step.

HTTP Connections to External Server node in SM59


Step 3 — Create or Select the Connection

Click Create. If you already have a connection, select it instead.

Create button to add a new HTTP connection


Step 4 — Define the Connection Name

Fill in the following values:

Field Value
Connection Type G – HTTP Connection to External Server
Destination Name (recommended) ONIBEX_ONECONNECT / ONIBEX_POC

Form to define RFC destination name and connection type G - HTTP


Step 5 — Configure Technical Settings

Fill in the following values on the Technical Settings tab:

  1. Descriptions (optional): Onibex One Connect
  2. Host: IP address of the server where data is sent from SAP
  3. Port: Port number used to connect with the host
  4. Path Prefix: The path where the web/app is located

Technical Settings tab fields

💡 Example — How to split a URL:

Full URL: https://{DOMAIN}:5051/api/v1/saplistener/{CLIENT}

  • Host: {DOMAIN}
  • Port: 5051
  • Path Prefix: /api/v1/saplistener/{CLIENT}

Completed Technical Settings with host, port, and path prefix


Step 6 — Configure Logon & Security

In the Logon & Security tab, enter the username and password that you previously set up on the One Connect site (as shown in the image below).

Logon and Security tab with user and password fields


Step 7 — Test the Connection

Once all required fields are completed, click Connection Test.

Interpreting the HTTP Response Status

Status Code Meaning Action
200 Successful connection ✅ No action needed
400 Server not detected Review host, port, and path prefix
500 Authentication failure Review username and password in Logon & Security

Connection Test button in SM59

HTTP Response 200 indicating successful connection

✅ You're done! Your SAP system is now configured to communicate with the external endpoint via RFC.

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