BASIC Error Codes and Error Messages

At a Glance

The tables below provides MS-DOS BASIC error codes and their associated error messages.

Run-time errors can occur while an application is running, either within the BASIC environment or as a stand-alone executable file. Some of these errors can also occur during compile time.

Worth knowing

Useful and cross-version information about the programming environments of QBasic and QuickBasic.

ASCII Code Tables
Keyboard Scan Codes
Syntax Conventions
Screen Modes, Adapters, Displays, Colors
BASIC Character Set
Error Codes

Code	Message
1	NEXT without FOR
2	Syntax error
3	RETURN without GOSUB
4	Out of DATA
5	Illegal function call
6	Overflow
7	Out of memory
8	Label not defined
9	Subscript out of range
10	Duplicate definition
11	Division by zero
12	Illegal in direct mode
13	Type mismatch
14	Out of string space
16	String formula too complex
17	Cannot continue
18	Function not defined
19	No RESUME
20	RESUME without error
24	Device timeout
25	Device fault
26	FOR without NEXT
27	Out of paper
29	WHILE without WEND
30	WEND without WHILE
33	Duplicate label
35	Subprogram not defined

Code	Message
37	Argument-count mismatch
38	Array not defined
40	Variable required
50	FIELD overflow
51	Internal error
52	Bad file name or number
53	File not found
54	Bad file mode
55	File already open
56	FIELD statement active
57	Device I/O error
58	File already exists
59	Bad record length
61	Disk full
62	Input past end of file
63	Bad record number
64	Bad file name
67	Too many files
68	Device unavailable
69	Communication-buffer overflow
70	Permission denied
71	Disk not ready
72	Disk-media error
73	Feature unavailable
74	Rename across disks
75	Path/File access error
76	Path not found