NX has an alarm function for features. The following text will explain Feature Alerts briefly.
A red „X“



Normally, Feature Alerts are caused by the geometry. If you fail to obsereve the alert and still create the feature, a blue i or yellow exclamation mark wil be shown next to the feature within Part Navigator.
3 Examples for handling Feature Alerts follow. However Feature Alerts can be related to most features of NX.
Edge blend radius too large:
If you entered a radius that is too large while creating an Edge Blend, it cannot be created by NX. The following Alert will be shown: (refer figure "Alert Edge Blend"). The solution is, as stated within the window, to reduce the radius size.
Chamfer distance too large:
If you entered a distance that is too large for a chamfer, you'll get this alert: (refer figure "Alert chamfer"). This means NX cannot connect the created surface to each other. You should reduce the distance.
Hole diameter too large:
When creating a hole with counterbore, the diameter of the counterbore always has to be larger than the diameter of the actual hole. If you did not meet this requirement, NX will show you the following alert: (refer figure "Alert hole with counterbore"). In this case, change the counterbore diameter.