The following are custom error codes for Perl driver:
| Error code number | Error code | Error message | Supported versions |
| -2001 | CUBRID_ER_CANNOT_GET_COLUMN_INFO | Cannot get column info | 8.4.0/8.4.1 |
| -2002 | CUBRID_ER_CANNOT_FETCH_DATA | Cannot fetch data | 8.4.0/8.4.1 |
| -2003 | CUBRID_ER_WRITE_FILE | Cannot write file | 8.4.0/8.4.1 |
| -2004 | CUBRID_ER_READ_FILE | Cannot read file | 8.4.0/8.4.1 |
| -2005 | CUBRID_ER_NOT_LOB_TYPE | Not a lob type, can only support SQL_BLOB or SQL_CLOB | 8.4.0/8.4.1 |