The profile needs to be split at the split knuckle before the detailing can be processed. - Intergraph Smart 3D - Help - Hexagon

Object Type in the To Do List: Profile part.

Meaning: The profile has a split knuckle but was not split using this knuckle. In most cases, this knuckle is inherited from the split knuckle on a parent plate. Alternatively, the knuckle might depend on the parent plate geometry.

Recovery:

1. Split the profile using the knuckle point.

2. If not required, change the knuckle to a bend, or ignore the knuckle.