start of reserved range for application error codes
request contained an invalid character
request was not well-formed
request was in an unsupported encoding
internal error
invalid parameters
request was not valid XML-RPC
method not found
start of reserved range for system error codes
start of reserved range for transport error codes
Pre-defined XML-RPC fault codes fromhttp://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php .
These are an extension, not part of the XML-RPC spec; you can't
assume servers will use them.