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Unhandled exception - Coordinate system conversion failed

Updated: Jun 15, 2023

If your design does not fit within the coordinate system boundary, the Devotech iDAS Pipe Manager might display the following message:

Unhandled exception - The coordinate system conversion failed




There are three options how to fix this error:


Option 1

Use Civil 3D 2023. It seems that Autodesk fixed this issue in their coordinate systems. We tested a few drawings and we could not replicate this issue any more in Civil 3D 2023.



Option 2

If you do not need to display backdrop image in the Pipe Manager, you may consider using the coordinate system that covers the entire world. Unfortunately, this solution does not always works:



Option 3

The video below demonstrates what causes this error but the solution is fairly simple, move all the AutoCAD entities to the area covered by the coordinate system assigned to your drawing.

Note: In South Africa, the Lo zones are 2 degrees so all the objects must fall inside the strip -105 000 m and 105 000 m (measured from the central meridian which starts at 0,0).



This video is also available on our Training on Demand site, Surfaces and Survey channel.


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