I was given some IFC made with "Sierrasoft Roads" software.
Everytime I try to convert them to a featureclass using Data Interoperability's Quick Import, I always hit this error:
ISO10303-21: Skipping instance #75: Instance is not syntactically valid.
Opening the IFC in Notepad and inspecting the instance I read:
#37=IFCCONNECTEDFACESET((#49,#56,#63,#70,#77,#84,#91,#98,#105,#112,#119,#126,#133,#140,#147,#154,#161,#168,#175,#182,#189,#196,#203,#210));
So, either the instance is indeed invalid, or the Data Interoperability cannot interpret it correctly.
If this might be of interest, opening the IFC with Civil 3D I can see the model without problem.
Some specs:
- Data Interoperability (and Pro) version is 2.2
- IFC version is IFC2X3
The Quick Import settings: the same as explained in a 2016 Esri post (unfortunately I cannot find the link, but only
