I_NOERR             0       no error
I_NOTDB             1       not a valid database handle
I_NOTINDEX          2       not a valid index handle
I_INUSE             3       can't destroy database in use
I_NOCURRENT         4       no current record to process
I_OOM               5       out of memory (can't malloc)
I_NOTALLOWED        6       operation not allowed for this index
I_IO                7       I/O error
I_INDEXNOTFOUND     8       unknown index name
I_CBT               9       error from cbt
I_NOTFILE           10      file not found
I_KEYTOOLONG        11      key too long for buffer size
I_CORRUPTINDEX      12      corrupted index file
I_MAXINBR           13      too many indexes for one database
I_NOMARK            14      no marked record
I_CANTRENAME        15      cannot rename data base
I_MAKENAME          16      cannot make filename
I_DUPINAME          17      new index name duplicates existing
I_NOTFLDNAME        18      name is not name of existing field
I_COPYSAME          19      can't copy database to itself
I_BLKSIZE           20      blocksize too big for buffer pool
I_IFEXIST           21      index file exists
I_INITCALLED        22      isam init already called