Cannot create target element /ns0:mt_is_respuesta_res. Values missing in queue context. Target XSD requires a value for this element, but the target-field mapping does not create one

Hello Everybody,

I'm working over single stack and NWDS and I'm using Adapter XI to JDBC Synchronous,  when I send value params the message request is sucessfull but the result is with error message mapping response.

Transmitting the message using connection SOAP_http://sap.com/xi/XI/System failed, due to: com.sap.engine.interfaces.messaging.api.exception.MessagingException: Error encountered while executing mapping: com.sap.aii.af.service.mapping.MappingException: Runtime Exception when executing application mapping program com/sap/xi/tf/_mm_respuesta_; Details: com.sap.aii.mappingtool.tf7.IllegalInstanceException; Cannot create target element /ns0:mt_is_respuesta_res. Values missing in queue context. Target XSD requires a value for this element, but the target-field mapping does not create one. Check whether the XML instance is valid for the source XSD, and whether the target-field mapping fulfils the requirement of the target XSD.

and exec jdbc returned value "B".

If someone can help with any ideas?

Thanks for your help