File to IDoc scenario

Hi!

I am facing with the following error within File to IDOC scenario.

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

<!--

Request Message Mapping

-->

<SAP:Error xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="">

<SAP:Category>Application</SAP:Category>

<SAP:Code area="MAPPING">EXCEPTION_DURING_EXECUTE</SAP:Code>

<SAP:P1>com/sap/xi/tf/_MM_MT_Material_MATMAS02_</SAP:P1>

<SAP:P2>com.sap.aii.utilxi.misc.api.BaseRuntimeException</SAP:P2>

<SAP:P3>RuntimeException in Message-Mapping transformatio~</SAP:P3>

<SAP:P4 />

<SAP:AdditionalText />

<SAP:ApplicationFaultMessage namespace="" />

<SAP:Stack>During Application-Mappings com/sap/xi/tf/_MM_MT_Material_MATMAS02_ the follwoing error com.sap.aii.utilxi.misc.api.BaseRuntimeException:

RuntimeException in Message-Mapping transformatio~.</SAP:Stack> <SAP:Retry>M</SAP:Retry>*

</SAP:Error>

Question

How can I solve this problem?

Thank you!

Holger