You have released the scenario, as described in SAP Note 1320198 .
If you are using one of the following SSO/STS scenarios, the following prerequisites must be fulfilled.
STS Scenario with Symmetric Key for Endorsing Signature (Authentication Only)
STS Scenario with Asymmetirc Consumer Key for Endorsing Signature (Authentication Only)
Messages between the WS provider and WS consumer are secured, either at transport level with the Secure Sockets Layer protocol (HTTPS) or at message level (symmetric message encryption/signature). In the case of symmetric message encryption, you need to import the encryption certificate of the provider into the PSE WSSCRT in the Trust Manager of the consumer.
You have received the WSDL document of the provider that you require to configure the consumer.
You have the STS data, in particular, the STS URL and the STS MEX URL.
This procedure provides a detailed sequence of all of the necessary steps that you need to perform in the WS consumer. This example uses the SOA Manager individual configuration.