You must modify WSDL of a web service provider to include IssuedTokenPolicy that points to Access Manager WS-Trust STS. To modify WSDL, add a WS-Policy with IssuedTokenElement.
The following is a sample configuration:
<wsp:Policy wsu:Id="<policy_name>">
<wsp:ExactlyOne>
<wsp:All>
<wsaws:UsingAddressing xmlns:wsaws="http://www.w3.org/2006/05/addressing/wsdl" wsp:Optional="false"/>
<sc:KeyStore wspp:visibility="private" alias="xws-security-server"/>
<sp:SymmetricBinding>
<wsp:Policy>
<sp:ProtectionToken>
<wsp:Policy>
<sp:IssuedToken sp:IncludeToken="http://schemas.xmlsoap.org/ws/2005/07/securitypolicy/IncludeToken/AlwaysToRecipient">
<sp:RequestSecurityTokenTemplate>
<t:TokenType>http://docs.oasis-open.org/wss/oasis-wss-saml-token-profile-1.1#SAMLV1.1</t:TokenType>
<t:KeyType>http://schemas.xmlsoap.org/ws/2005/02/trust/SymmetricKey</t:KeyType>
<t:KeySize>256</t:KeySize>
</sp:RequestSecurityTokenTemplate>
<wsp:Policy>
<sp:RequireInternalReference/>
</wsp:Policy>
<sp:Issuer>
<wsaws:Address>https://namtest.com:8443/nidp/wstrust/sts</wsaws:Address>
<wsaws:Metadata>
<wsx:Metadata>
<wsx:MetadataSection>
<wsx:MetadataReference>
<wsaws:Address>https://namtest.com:8443/nidp/wstrust/sts/mex</wsaws:Address>
</wsx:MetadataReference>
</wsx:MetadataSection>
</wsx:Metadata>
</wsaws:Metadata>
</sp:Issuer>
</sp:IssuedToken>
</wsp:Policy>
</sp:ProtectionToken>
<sp:Layout>
<wsp:Policy>
<sp:Lax/>
</wsp:Policy>
</sp:Layout>
<sp:IncludeTimestamp/>
<sp:OnlySignEntireHeadersAndBody/>
<sp:AlgorithmSuite>
<wsp:Policy>
<sp:Basic128/>
</wsp:Policy>
</sp:AlgorithmSuite>
</wsp:Policy>
</sp:SymmetricBinding>
<sp:Wss11>
<wsp:Policy>
<sp:MustSupportRefIssuerSerial/>
<sp:MustSupportRefThumbprint/>
<sp:MustSupportRefEncryptedKey/>
</wsp:Policy>
</sp:Wss11>
<sp:Trust10>
<wsp:Policy>
<sp:MustSupportIssuedTokens/>
<sp:RequireClientEntropy/>
<sp:RequireServerEntropy/>
</wsp:Policy>
</sp:Trust10>
</wsp:All>
</wsp:ExactlyOne>
</wsp:Policy>