They are valid characters for XML. See mskb #315580 PRB: Error Message When an XML Document Contains Low-Order ASCII Characters for details.

>These fields are not intended for storing binary data. They contain character data, but I believe that some records have a bit of trash in them. I imagine that tab or CRLF would not pose problems, or would it? My original intent was to find a way to minimally clean the data to prevent parsing problems, however the NOCPTRANS idea helped as far as it suppressed the error.
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