This error message can have several causes:

• The filters are set in such a way that no elements are being transferred. For example, if you cleared the Line option under Transfer elements in the Options dialog box, and the file being imported consists only of lines, then nothing is transferred. Check the filter setting.
• The file was created in paper space, but you have selected to import model space. Check the AutoCAD-specific settings in the Options. Please note that you can only import data from AutoCAD’s paper space to Allplan layouts. You can only select the space when you import data to documents. More information is provided in Importing to and exporting from AutoCAD's model space and paper space.
• The file contains frozen layers. Inform your partner office that frozen layers should not be transferred.
• The file was not created with pure AutoCAD but with an AutoCAD add-on. It only contains elements that cannot be analyzed by the interface.
• You are importing an HPGL file: The file being imported contains data in PCL and/or RTL code. However, Allplan's interface only supports pure HPGL and HPGL2 native. Discuss this with your data exchange partner in advance.

This warning indicates that the exported document contains bitmap areas or a scanned image and you have enabled the Image option in the Explode elements area in the options. But scanned images and bitmap areas are only exported when they are not exploded. For more information, see Exporting bitmaps and scanned images.

This warning indicates that the imported file contains coordinates exceeding 5,000 m. These coordinates may cause problems. More information is provided in Importing files with large coordinates.

This indicates that the file type does not match the contents of the file. This may occur when you rename a file manually (File.dxf is renamed File.dgn, for example).

The name of a layer, line type, smart symbol, text style, dimension style has been assigned to different definitions multiple times.

The ID of an object is already used by a different object or there is no object with this ID.

The object is incomplete or incorrect.

An object is used in various lists for defining the string sequence.

The DXF version is not known.

The DXF file contains a line type that is not defined in the line type table.

The name of the ByBlock line type is incorrect (DXF); the name depends on the language.

The name of the ByLayer line type is incorrect (DXF); the name depends on the language.

You have used incorrect group codes that do not match the data type.

The name of the model space or paper space is not correct.

The name of a table entry includes invalid characters.

The name of a table entry includes invalid characters.