In the Siteminder 12.X - WAMUI ,
For the authentication scheme setup.
The cert entry shall be choosable (either with alias of the cert) rather than Fill up the DN of the cert. while at the same time the user has to have an option to upload the cert from the same screen.
From a usability perspective:
1) Minimal data entry by the administrator. when the information is readily available to choose from. Minimizes Errors in the configuration.
2)Easy wizard driven steps to follow to achieve the desired result - Rather than enter multiple pieces of information on multiple screens to obtain the same effect. - Minimizes the complexity of the use cases.
3)Use the policy store information for the administrator to choose rather than enter the information. - minimizes the administrator overhead to work and configure the wamui either protecting the applications or federating them.