1-255               DOS error
 256                 Can not read database header
 257                 Invalid database
 258                 Invalid field type
 259                 Invalid dynamic field type
 260                 Invalid index field
 261                 No database in use
 262                 Divide by zero
 263                 Call back table full
 264                 Unlinked field accessed
 266                 Memo buffer overflow
 267                 Memo not opened
 268                 Memo buffer full
 269                 Invalid alias pointer
 270                 Label form not set
 271                 Menu buffer overflow
 272                 Unknown menu identifier
 273                 Not enough memory for requested block
 274                 Memory deallocation with invalid handle
 275                 Memory chain destroyed
 276                 Invalid memory block setting
 277                 Record pointer not indexed
 278                 Unable to restore screen
 279                 Index number invalid
 280                 Index number out of range
 281                 Index file not found
 282                 Invalid index file
 283                 Index file not opened
 284                 Record out of range
 285                 Accessing field at EOF
 286                 Index file corrupted
 287                 Seek with no index in use
 288                 Deallocating locked block
 289                 Alias opened twice
 290                 Field width mismatch
 291                 Field mismatch in database
 292                 Array index out of range
 293                 Workarea stack overflow
 294                 Disk full
 295                 Invalid use of get
 296                 Workarea out of range
 297                 Field width overflow
 298                 Data object size mismatch
 299                 Invalid report structure
 300                 Operand out of range
 301                 Get stack overflow
 302                 Unable to open database file
 303                 String size out of bounds
 304                 Invalid file object
 305                 Invalid picture
 306                 Unable to locate block parent
 307                 Invalid list object
 308                 List index out of range
 309                 Unset field accessed
 310                 Invalid menu object
 311                 Invalid DOS version
 314                 Exclusive use of database required
 315                 File lock required
 316                 Record lock required
 317                 Duplicate virtual file handle
 318                 Child process installed TSR program
 319                 Invalid database block handle