While importing the Roles and Tasks the following error message is displayed:
Error: Unexpected null value
Identity Manager 14.x (vApp or Standalone)
In some cases, the Provisioning Roles' eTID is empty and cause the "Unexpected null value" message.
You can enable the option below in Management Console and try to import again and check the log file and verbose message for the root cause
Management Console, Home › Environments › identityEnv check the "Enable Verbose Log Output (Slows deployment)"