Applications can invoke the initACEE callable service (IRRSIA00) requesting deregistration of a user certificate. This deregistration function performs the same function as the RACDCERT DELETE command, and disassociates the certificate from the current user ID. If the caller's user ID has at least READ authority to the IRR.DIGTCERT.DELETE resource, the profile in the DIGTCERT class associating the certificate with this user ID is deleted, and the name of the DIGTCERT profile is removed from the user's profile.