I try to catch data from a SOAP server, using the workflow plugin “Soap Client Plugin-in”.
I have entered the WSDL address and successfully get the service and the associated methods displayed. When I execute the process, I always get an error message:
 W3001 : Error while executing plugin: Exception executing method: Exception while looping through soap methods: Das NULL-Objekt kann nicht in einen Werttyp konvertiert werden. | inner exception:
The german part of the error message in english:
The NULL object can not be converted to a value type.
Does anyone have any idea which NULL object is meant?