Hello, the problem is a bit more complicated to describe, so a slightly different listing: Initial situation: - Property in Inspector is set to required - A link (NodeType) is already integrated and published What do I do that the error comes: - Remove link via trash can - Apply button remains disabled due to required - Click on "Create Link - Window of Archaeopteryx opens - Clicking on the window brings the error message: "You still have changes. What do you want to do with them?" So I can continue working: - Click on Throw away