When you encounter the error "Possible circular reference to current drawing" in AutoCAD while attaching an external reference (xref), it means that the drawing you are trying to reference has the same name as the current drawing. This creates a circular dependency which AutoCAD cannot resolve.
Check File Names: Verify that the file name of the drawing you are trying to reference does not match the name of the current drawing.
Rename if Necessary: If the names match, rename either the current drawing or the external reference file.
Steps to resolve:
Save the current drawing with a different name if necessary.
Ensure the external reference file has a unique name before attaching it.
This prevents the circular reference error and allows the xref to be attached properly.
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