The Community Milestone Event Reward Bundle is not claimable if you already have 28 Enduring Power Datacrons.
Okay, so I like stockpiling datacrons. Already had the max of 30. The DCs seem like they are useful. Anyway, unlike most things that allow you to claim most of the packaged rewards, the Community Milestone rewards can’t be claimed if you don’t have room for the 3 level 0 datacrons.
