You must configure your SAP Business Suite (backend) system to accept SAP assertion tickets from the SAP Gateway host for message-based Web service communication.
To accept SAP assertion tickets, proceed as follows:
Make sure that the profile parameters are set as outlined in Profile Parameters.
In your backend system go to transaction SSO2 to run the SSO2 administration wizard.
If transaction SSO2 does not work, use STRUSTSSO2 to import the certificates from the SAP Gateway server; you must import them manually. For further information, see the SAP NetWeaver documentation about Using Transaction STRUSTSSO2.
Enter the Type 3 RFC destination created above (for your SAP Gateway system) or the Host Name and Instance Number for the SAP Gateway system in the appropriate fields.
On the Logon page enter your password.
The SSO2 administration report for the designated SAP system displays.
Choose Activate (Enter Certificate in ACL and, if Necessary, Certificate List) to configure the SAP system.