This appendix lists the AutoLISP error codes.
The following table shows the values of error codes generated by AutoLISP. The ERRNO system variable is set to one of these values when an AutoLISP function call causes an error that AutoCAD detects. AutoLISP applications can inspect the current value of ERRNO with (getvar "errno").
The ERRNO system variable is not always cleared to zero. Unless it is inspected immediately after an AutoLISP function has reported an error, the error that its value indicates may be misleading. This variable is always cleared when starting or opening a drawing.
NOTE The possible values of ERRNO, and their meanings, may change in future releases of AutoCAD. Online program error codes
Value Meaning
0 No error
1 Invalid symbol table name
2 Invalid entity or selection set name
3 Exceeded maximum number of selection sets
4 Invalid selection set
5 Improper use of block definition
6 Improper use of xref
7 Object selection: pick failed
8 End of entity file
9 End of block definition file
10 Failed to find last entity
11 Illegal attempt to delete viewport object
12 Operation not allowed during PLINE
13 Invalid handle
14 Handles not enabled
15 Invalid arguments in coordinate transform request
16 Invalid space in coordinate transform request
17 Invalid use of deleted entity
18 Invalid table name
19 Invalid table function argument
20 Attempt to set a read-only variable
21 Zero value not allowed
22 Value out of range
23 Complex REGEN in progress
24 Attempt to change entity type
25 Bad layer name
26 Bad linetype name
27 Bad color name
28 Bad text style name
29 Bad shape name
30 Bad field for entity type
31 Attempt to modify deleted entity
32 Attempt to modify seqend subentity
33 Attempt to change handle
34 Attempt to modify viewport visibility
35 Entity on locked layer
36 Bad entity type
37 Bad polyline entity
38 Incomplete complex entity in block
39 Invalid block name field
40 Duplicate block flag fields
