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SAP Connection

This page shows how to connect to SAP.

Warning

Missing Authorization.
To establish a connection to SAP, the access to general authority objects must be available. Adjust the SAP Authority Objects accordingly.

Supported Connection Methods

  • Connection to a single application server
  • Connection to a message server (Load Balancing)

Supported Authentication Methods

Connect to SAP

To set up an SAP connection that uses an SAP username and password for authentication.

  1. Navigate to the Connections menu at the left side navigation area of the Designer.
  2. Click [Add Connection] to create a new connection or click to an existing SAP connection.
    yunIO-Create-Connection-1
  3. When creating a new connection, enter a unique name for the connection and select the connection type SAP RFC.
    yunIO-Create-Connection-2
  4. Click [Next].
  5. Enter the system details of your SAP system in the subsection System .
    yunIO-Create-Connection-3
  6. Make sure the toggle in the subsection Authentication is set to Plain authentication. For information on how to set up Secure Network Connection (SNC), see SNC Authentication.
  7. Enter the SAP username and password of an SAP system or dialogue user.
  8. Click [Test Connection] to validate the connection parameters .
    A window with a status message opens in the bottom right corner of the window.
  9. Click [Save] to save the connection.

Tip

Activate the option Request credentials from callers when running services to pass valid SAP credentials via Basic Authentication. To pass credentials, the access control setting Anonymous must be activated.

Connect via Router

If you access the SAP source system (Application server or Message server) via an SAP router, set the router string before the host name. For more information on SAP routers, see SAP Help: SAP-Router.

Example:
If the application server is "hamlet" and the router string is /H/lear.theobald-software.com/H/, set the host property to /H/lear.theobald-software.com/H/hamlet.

SAP Connection Settings

To open the connection settings of an existing SAP connection, click next to the connection.

The connection settings consist of the following subsections:

  • System defines how to reach your SAP system .
  • Authentication defines the login details of the SAP user .
  • Test Connection verifies the system and authentication data .

yunIO-Create-Connection

System

The input fields for the SAP connections vary depending on the connection method. yunIO supports the following connection methods to SAP systems:

Use the toggle to switch between the connection methods.

Input Field Description
Host Host name or IP address of the application server (Property Host).
Instance No A two-digit number between 00 and 99 (Property SystemNumber).
Client A three-digit number of the SAP client between 000 and 999, e.g., 800.
Language The logon language for the SAP system, e.g., EN for English or DE for German.
Input Field Description
Logon group Property LogonGroup, usually PUBLIC.
Message Server Name or IP address of the message server (Property MessageServer).
System ID Three-digit System ID (Property SID e.g., MSS).
Client A three-digit number of the SAP client between 000 and 999, e.g., 800.
Language The logon language for the SAP system, e.g., EN for English or DE for German.

Authentication

The following authentication methods are supported:

  • Plain uses the SAP username and password of a system or dialogue user.
  • Secure Network Communication (SNC) uses the username and password provided via basic authentication. SNC enables authentication and transport encryption between SAP systems and third-party tools like yunIO.

Use the toggle to switch between the authentication methods.

yunIO-Authentication

Input Field Description
User SAP username.
Password Password of the SAP user.
Request credentials from callers when running services If this checkbox is active, SAP credentials are used to restrict service access. Any valid SAP credentials can be passed via Basic Authentication to allow access to a yunIO service.

Note

To use Request credentials from callers when running services, the Anonymous Access option must be activated.

Input Field Description
SNC library path Complete path to the SAP cryptograhic library location, e.g., C:\Program Files\SAP\FrontEnd\SecureLogin\lib\sapcrypto.dll.
SNC partner name SAP partner name configured for the SAP application server, e.g., p:SAPserviceERP/Alice@THEOBALD.LOCAL.

Test Connection

Clicking [Test Connection] validates the connection parameters. A window with a status message opens in the bottom right corner of the window.


Last update: September 28, 2025