Cannot create target element

Hi experts,

RuntimeException during appliction Java mapping com/sap/xi/tf/_MM_RESELLEREXCLUSION_NIMBUS_ Thrown: com.sap.aii.mappingtool.tf7.IllegalInstanceException: Cannot create target element /ns1:save. 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

can any one suggest me on this issue ASAP

Regards,

Vijay