XI Value Mapping Replication JPR Error

Hello together,

I am trying to insert items from a csv-file into XI Value Mapping by using the XI adapter. Mapping and configuration is finished, the file is picked by file-adapter and comes through the mapping. In the SXMB_MONI the message is processed correctly, but in the RWB I get the following error:

"Runtime exception during XML parsing: Error parsing document. Exception: Generic Exception: com.sap.aii.proxy.xiruntime.core.XmlProxyRuntimeException: InvocationTargetException when calling method com.sap.xi.xI.system.ValueMappingReplicationItem_Type$Operation_Type.fromValue: insert is not among the enumerated values."

Do you have any idea, what the problem is?

Thank you very much in advance!

Kind regards,

Fred