Error during Runtime: Mapping : RESOURCE_NOT_FOUND

Question

<b>Hello everybody,
I get the following error during runtime while mapping:</b>
  <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
- <!--  Mapping der Request-Message
  -->
- <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"><u><b>RESOURCE_NOT_FOUND</b></u></SAP:Code>
  <SAP:P1>com/sap/xi/tf/_MM_FILE_REQUEST_2_RESPONSE_.class</SAP:P1>
  <SAP:P2>http://mm_file_2_file</SAP:P2>
  <SAP:P3>7c57acd0-19fa-11da-a907-fba1c22dd3ca</SAP:P3>
  <SAP:P4>-1</SAP:P4>
  <SAP:AdditionalText />
  <SAP:ApplicationFaultMessage namespace="" />
  <SAP:Stack>The Resource com/sap/xi/tf/_MM_FILE_REQUEST_2_RESPONSE_.class (http://mm_file_2_file, 7c57acd0-19fa-11da-a907-fba1c22dd3ca, -1) could not be found.</SAP:Stack>
  <SAP:Retry>M</SAP:Retry>
  </SAP:Error>
<b>Does anybody have an idea?
Thanks a lot
regards Mario</b>

Answer 1

Could the reason be a wrong "file content convert"?
The payload:
<?xml version="1.0" encoding="utf-8" ?>
<ns:TEST.TXT xmlns:ns="http://mm_file_2_file">
  <Record>
   <Row>
    <FirstName>Mario</FirstName>
    <LastName>Mueller</LastName>
    <City>Mannheim</City>
    <Country>Deutschland</Country>
  </Row>
</Record>
</ns:TEST.TXT>
Structure of corresponding Data-Type
  Record  1..unbounded
    Row     1
      FirstName   1
      LastName    1
      City        1
      Country     1
Regards Mario