DTW, error: to create nodes of type ELEMENT

Hi everyone,

I have a problem with DTW, i need upload a Good Recipe PO, when i select the 3 files: Document, document Line and SerialNumbers, and i press Next Button.. the DTW show a error: < to create nodes of type "Element", a valid name must be especified >. I have DTW version 900.52.1.0 and API Version 9.0.59

I hope help me!! Thank you!