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= Error Codes

Ignite JDBC drivers pass error codes in the `java.sql.SQLException` class, used to facilitate exception handling on the application side. To get an error code, use the `java.sql.SQLException.getSQLState()` method. It returns a string containing the ANSI SQLSTATE error code:

[source,java]
----
include::{javaCodeDir}/JDBCThinDriver.java[tags=error-codes, indent=0]
----


The table below lists all the link:https://en.wikipedia.org/wiki/SQLSTATE[ANSI SQLSTATE] error codes currently supported by Ignite. Note that the list may be extended in the future.

[width="100%",cols="20%,80%"]
|=======================================================================
|Code |Description

|0700B|Conversion failure (for example, a string expression cannot be parsed as a number or a date).

|0700E|Invalid transaction isolation level.

|08001|The driver failed to open a connection to the cluster.

|08003|The connection is in the closed state. Happened unexpectedly.

|08004|The connection was rejected by the cluster.

|08006|I/O error during communication.

|22004|Null value not allowed.

|22023|Unsupported parameter type.

|23000|Data integrity constraint violation.

|24000|Invalid result set state.

|0A000|Requested operation is not supported.

|40001|Concurrent update conflict.

|42000|Query parsing exception.

|50000|Ignite internal error.
The code is not defined by ANSI and refers to an Ignite specific error. Refer to the `java.sql.SQLException` error message for more information.
|=======================================================================