The "hostid" is required for the node-locked and floating licenses. With this Id your final licenses will be created, so please make sure that you are using the correct one, because it is different for every computer. Once the Id has been added to your license it cannot be changed anymore – this process is final. In the “Customer Gateway” of RealFlow's website you have to enter the “hostid” and claim your license file. The file will be stored on your computer and can use the wizard again to install it.
When your copy of RealFlow is unlicensed you can , open the " Licensing Wizard", for example. There you You will see an entry called : "I want to find the hostid of this machine" . Click on it to see the Id Selecting this will show you the id for the computer where on which RealFlow is currently running.
Using the Terminal for Different Computers
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