I am using XML to transfer a VFP database to Access using the commands

CURSORTOXML(lcTable, "c:\myXMLFile.xml", 1, 512, 0, "mySchema.xsd")
oAccess.ImportXML("c:\myxmlfile.xml")

This seems to work almost perfect except that one of the tables produces Access import errors that say "Microsoft JET Database Engine: The field is too small to accept the amount of data you attempted to add." or "Microsoft JET Database Engine: Update or CancelUpdate without AddNew or Edit.". The errors occur on only a few of the records.
The table structure of the Access table appears to match that of the VFP table as far as field widths go. Can someone give me a clue as to what's happening here?
Thanks