|-
|<code>BXCL0001</code>
| A An error occurred while creating a new session could not be created (e.g., the addressed examples: server is not available, wrong login data).
|-
|<code>BXCL0002</code>
|-
|<code>BXCL0003</code>
| An I/O error occurred while communicating with transferring data from or to the server.
|-
|<code>BXCL0004</code>
| A An error occurred while executing a command has not been successfully executed.
|-
|<code>BXCL0005</code>
| A An error occurred while evaluating a query could not . Will only be successfully evaluatedraised if the XQuery error cannot be extracted from the returned error string.
|}