What is the XML File as SCS900 doesnt really use LandXML files for anything today and it may well be that the XML is not a LandXML file - can you open it in an editor and screen grab the content look or send me the file and I can take a look at it.
If you want to bring in SCS900 data - I suggest either DXF Output or use the SPJ / GCJ file from the Work Order. If they added a LandXML output, I need the file if it is failing so we can tell them how to fix their output.
Alan