File adapter sends return message to SOAP adapter

Hi,

I have managed to send a message using a SOAP sender adapter to a file using the file adapter. The respective message is written to a file. Though both adapters are configured to work in an asynchronous way, the file adapter seems to try to return as message. This results in an error message: "Das Interface-Mapping ... ist nicht im Laufzeit-Cache vorhanden". I have updated and checked the runtime cache. The respective mapping program is available and working, since the file adapter writes the send date to the file. So why this message?

Kind regards,

Heiko