The reference object, used to place the edge feature by offset, does not intersect with the edge. (Structural Detailing)
Meaning: An edge feature offset point is placed using a reference that does not intersect with the edge. A To Do List message with no description also displays for the offset point.
Verify that the reference object intersects with the edge selected for the feature. If there is no intersection, select a reference object that does intersect with the edge.
In some cases, an input could be missing. Reselect an object for the missing input.