A Landing Curve AE does not have the Parent1 relationship.
A landing curve active entity (AE) does not have the Parent1 relationship:
Missing the LandCrvIntParent1 relationship to IJSurfaceBody (various) for LandCrvIntersect_AE
Missing LandCrvOffParent1 relationship to IJSurfaceBody (various) for LandCrvOffset_AE
What You Should Do
Open the model.
In the Molded Forms task, select the object, and modify it, if necessary. Or, select the object, and perform a re-computation to update it.
Re-run the Check Database Integrity custom command and the DBIntegrity report.
If the object is still posted, contact Smart 3D Support.