# Replacing licenses of previously licensed components

All components must have a valid license. You must replace any invalid or missing licenses with new ones.

If you have configured Domains, licenses can be viewed only in the Shared Domain. When the license is bound to an element (automatically or manually), the license is shown only in the Shared Domain, regardless of the Domain to which the element belongs. Licenses that are not allocated to any Domain can be manually allocated to a particular Domain through their right-click menu.

CAUTION:
If you use Management Server POL code-based licenses for Forcepoint Network Security Platform appliances, verify that the licenses are bound to the correct Security Engine elements. Remember to change the license if you change the appliance hardware.

Invalid or missing licenses can prevent components from working. If you are manually replacing working licenses with new ones, we recommend that you take a backup of the Management Server before you make changes. Then you can easily roll back the changes, if needed.