In cases where objects with a Z value (or a value in the 3 plane) have been accidentally copied into a 2D DWG drawing, this error must be corrected before starting work.

To fix this, follow the instructions below:

1) Open the ZWCAD program and only the DWG file (or DXF file) that contains the elements

2) We copy the text below with brackets into the command line

(command “MOVE” (ssget “x”) “” “0,0,0” “0,0,1e99”)
(command “MOVE” (ssget “p”) “” “0,0,0” “0,0,-1e99”)

3) We press the Enter key to complete the command.