2.1.715 Part 4 Section 188.8.131.52, xmlPr (Column XML Properties)
a. The standard specifies the value range for @xpath to be ST_Xstring.
Office requires that the value of attribute xpath be greater than 0 and less than 32000 characters.
b. The standard specifies that attribute mapId has the value range of xs:unsignedInt.
Office requires that the value of attribute mapId be greater than or equal to 1 and less than or equal to 2147483647.