Java Proxy error: Exception in method methodExists

Hello all!
We are doing the following synchronous scenario: CRM->XI->JavaProxy--->Third party....
Here is the process we are following to deploy our Proxy:
1.Created EJB Module Project in NWDS
2.Import the files generated by XI into ejbModule folder from ZIP file.
3.Renamed *PortTypeImpl.template to *PortTypeImpl.java
4.Compiled all code (no errors)
5.Added all the references to the SAP libraries required (taken from our XI server):
com.sap.aii.proxy.xiruntime
com.sap.xi.util.misc
com.sap.aii.messaging.runtime
com.sap.guid
6.Codified Java Proxy codified the method <interfacename> in the <intefacename>_PortTypeImpl class.
7.Edited ejb_jar.xml to add EJBs.
8.Provided a JNDI name in the file ejb-j2ee-engine.xml.
9.Built EJB archive (no errors).
10.Created a new Enterprise Application Project and pointed build path to our EJB Project.
11.Added our EJB to the Enterprise Application project.
12.Created the references to the SAP libraries in the Enterprise Application Project in the application-j2ee-engine.xml file:
com.sap.aii.proxy.xiruntime
com.sap.xi.util.misc
com.sap.aii.messaging.runtime
com.sap.guid
13.Within the Enterprise Application Project we built an EAR file.
14.We deployed our .ear file to the J2EE Engine via Visual Admin (no errors).
15.We registered our Java Proxy on the ProxyServer, using
/register?ns=<interface_namespace>&interface=<XI_Interface_Name>&bean=<EJB_JNDI_name> &method=<name of the method implemented by you on the _PortTypeImpl>
Actually, we did the following:
url for registering the EJB:
http://ithpsrq0:50200/ProxyServer/register?ns=http://banco.popular.com.pr/xi/crm&interface=mi_AccountInfo_is&bean=popularinc.com/MiAccountInfoIs_Default&method=miAccountInfoIs
Message displayed when listing interfaces (http://ithpsrq0:50200/ProxyServer/listAll)
http://banco.popular.com.pr/xi/crm#mi_AccountInfo_is = popularinc.com/MiAccountInfoIs_Default:miAccountInfoIs
1 interfaces found
When running the interface we get the following error:
com.sap.aii.af.ra.ms.api.DeliveryException: Error checking method name miAccountInfoIs of remote inbound proxy bean $Proxy250: Exception in method methodExists.: com.sap.aii.proxy.xiruntime.core.XmlInboundException: Error checking method name miAccountInfoIs of remote inbound proxy bean $Proxy250: Exception in method methodExists.
Does anyone have any suggestions?
What causes a "methodExists" Exception?
Please help us,
Thanks a lot!!!

Hi,
Is this a runtime of "com.sap.aii.proxy.xiruntime.core"
please check the jars used, adding this jars will solve this i guess.
aii_utilxi_misc.jar
ejb20.jar
exception.jar
jARM.jar
sapj2eeclient.jar
sapxmltoolkit.jar
aii_msg_runtime.jar
aii_proxy_xirt.jar
Also check, application-j2ee-engine.xml and see if,
com.sap.aii.proxy.xiruntime
com.sap.aii.messaging.runtime
com.sap.xi.util.misc
com.sap.guid
You wil get the jars in XI servers, you can ftp and get the jars, but you may need to search them.
Anotherthing, always take the jars from the xi servers to be sure you are compatible with the upgrades .
Hope this solves your problem.
Anirban.

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