So on the license-master, the message is telling you that :
- the daily license volume of your pool has been exceeded once.
- or you added a license-slave that had a warning when it was not linked to this license-master
The solution is to wait 30 days, the warning counter will reset (if you have no new warnings of course)
if you reach 5 warnings, the search will be locked. If you have an enterprise support, contact support for a reset.