SAP RFC JCO 中间件类库错误说明

SAP RFC JCO dll lib Error Description:

Constant	Description
JCO_ERROR_ABAP_EXCEPTION	An exception has been thrown by a function module in the remote system
JCO_ERROR_APPLICATION_EXCEPTION	An application exception has occurred in the remote SAP system
JCO_ERROR_CANCELLED	A registered JCo server has been cancelled
JCO_ERROR_COMMUNICATION	Exception caused by network problems, connection breakdowns, gateway problems, inavailability of the remote SAP system, etc.
JCO_ERROR_CONVERSION	A conversion between two representations of either a parameter, structure, or table field has failed
JCO_ERROR_FIELD_NOT_FOUND	A referenced field in either a JCO.ParameterList, JCO.Structure, or JCO.Table does not exist
JCO_ERROR_FUNCTION_NOT_FOUND	A function interface or one of the data structures could not completely be retrieved from the repository
JCO_ERROR_ILLEGAL_TID	An invalid transaction ID has been encountered. The TID was either longer than 24 characters or contained illegal characters
JCO_ERROR_INTERNAL	An exception inside of JCo
JCO_ERROR_LOGON_FAILURE	Authorization failures during the logon phase usually caused by unknown username, wrong password, invalid certificates, etc.
JCO_ERROR_NOT_SUPPORTED	A feature is not being supported by the current version of JCo
JCO_ERROR_NULL_HANDLE	An internally used connection handle is invalid
JCO_ERROR_PROGRAM	A general program exception has occurred
JCO_ERROR_PROTOCOL	An internal communication protocol error has been detected
JCO_ERROR_RESOURCE	Indicates that JCO has run out of resources such as connections in a connection pool
JCO_ERROR_SERVER_STARTUP	Something went wrong during the startup phase of a JCo server usually caused by passing a wrong gateway host or gateway service
JCO_ERROR_STATE_BUSY	The remote SAP system is busy. Try again later
JCO_ERROR_SYSTEM_FAILURE	A system failure in the remote SAP system has occurred
JCO_ERROR_UNSUPPORTED_CODEPAGE	Either the remote SAP system or the local systems runs under a codepage which is not supported by JCo
JCO_ERROR_XML_PARSER	A parse error due to an invalid XML document has occurred
JCO_ERROR_ILLEGAL_ARGUMENT	An illegal method argument has been detected

from url:

https://www.huihoo.org/openweb/jco_api/com/sap/mw/jco/JCO.Exception.html#JCO_ERROR_ILLEGAL_ARGUMENT