用户名密码可能是错误或者用户无权限,确认用户,必要时联系SAP负责人,检查用户
(103) RFC_ERROR_LOGON_FAILURE: ##.#####,####
(103) RFC_ERROR_LOGON_FAILURE: Name or password is incorrect (repeat logon)

call信息没有填写完整,检查配置文件各个SAP配置信息是否完整
(101) RFC_ERROR_PROGRAM: Missing R3NAME=... or ASHOST=... in connect_param in RfcOpenEx

ip地址失败：
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to SAP gateway failed

组权限访问 server文件没更新.
(102) RFC_ERROR_COMMUNICATION:Connect to message server failed

C:\WINNT\system32\drivers\etc

端口号错误报错信息：
(103) RFC_ERROR_LOGON_FAILURE: ## 502 ########

超时:
(103) RFC_ERROR_LOGON_FAILURE: Timeout

执行函数,函数的问题
(104) RFC_ERROR_SYSTEM_FAILURE: Error in module RSQL of the database interface.执行函数

(104) RFC_ERROR_SYSTEM_FAILURE: An error occurred when receiving a complex parameter.

(106) JCO_ERROR_RESOURCE: Trying to access row values in a table which does not have any rows yet

返回的表没有值.那个表连第一行都没有,取不到
(106) JCO_ERROR_RESOURCE: Trying to access row values in a table which does not have any rows yet

语法错误
(104) RFC_ERROR_SYSTEM_FAILURE: Syntax error in program SAPMV50A

找不到行
(106) JCO_ERROR_RESOURCE: Trying to access row values in a table which does not ha:ve any rows yet

输入参数不能插入SAP函数输入字段中.
(122) JCO_ERROR_CONVERSION: Integer '4234243' has to many digits at field PO_ITEM