IDoc AEX Error – Illegal Type of Handler Encountered

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Today I was working on getting an IDoc from SAP ECC (Enterprise Central Component) to PO/PI AEX (Advanced Adapter Engine Extended). It was from a second system, so I had to create a cloned ClonedRA_inboundRA for the new channel.

While sending an IDoc, I received the following error:

com.sap.conn.jco.JCoException: (104) JCO_ERROR_SYSTEM_FAILURE: Rollback fault: Illegal type of handler encountered: class com.sun.proxy.$Proxy3322 (raised by system PO01|PI_PO)
at com.sap.conn.jco.rt.MiddlewareJavaRfc.generateJCoException(MiddlewareJavaRfc.java:684)
at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcServer.listen(MiddlewareJavaRfc.java:2607)
at com.sap.conn.jco.rt.DefaultServerWorker.dispatch(DefaultServerWorker.java:251)
at com.sap.conn.jco.rt.DefaultServerWorker.loop(DefaultServerWorker.java:332)
at com.sap.conn.jco.rt.DefaultServerWorker.run(DefaultServerWorker.java:232)
at com.sap.mw.jco.jra.JRA$ReaderThread.run(JRA.java:8833)
at com.sap.engine.services.connector.jca15.work.TaskImpl.run(TaskImpl.java:245)
at com.sap.engine.core.thread.execution.Executable.run(Executable.java:122)
at com.sap.engine.core.thread.execution.Executable.run(Executable.java:101)
at com.sap.engine.core.thread.execution.CentralExecutor$SingleThread.run(CentralExecutor.java:328)
Caused by: RfcException raised by system [PO01|PI_PO]:
message: Rollback fault: Illegal type of handler encountered: class com.sun.proxy.$Proxy3322
return code: RFC_FAILURE (1)
error group: 104
key: RFC_ERROR_SYSTEM_FAILURE
at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcServer.playbackTRfc(MiddlewareJavaRfc.java:2905)
at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcServer.handletRfcRequest(MiddlewareJavaRfc.java:2712)
at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcServer.listen(MiddlewareJavaRfc.java:2511)
… 8 more

 

Only after a long period of time did I learn that this has happened because I had forgotten the bindingKey; I used it, and everything worked fine.

IDoc Error

IDoc Error

Have you ever encountered similar IDoc errors? If so, how did you handle the situation? Share your experiences in the comments section!

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