You access ITPAM from Service Desk via the Administrator tab and under Service Desk\Change Order\Categories. Select a category such as Add.it.other. Select the Workflow tab, select Edit and click on the ITPAM button. Without Enabling communication between Service Desk and SSL ITPAM you will see the error:
"There is a problem accessing CA IT PAM Workflow - please try again or contact the administrator. Details: ; nested exception is: java.net.SocketException: java.security.NoSuchAlgorithmException: Error constructing implementation (algorithm: Default, provider: SunJSSE, class: com.sun.net.ssl.internal.ssl.DefaultSSLContextImpl)"
This error is caused because the trust between the two products has not been created.