I have a pom.xml in C:\\Users\\AArmijos\\Desktop\\Factura Electronica\\MIyT\\componentes-1.0.4\\sources\\pom.xml and I executed:
pom.xml
C:\\Users\\AArmijos\\Desktop\\Factura Electronica\\MIyT\\componentes-1.0.4\\sources\\pom.xml
mv
Check for the name of the file, i.e pom.xml file is spelled correctly with proper file extension .xml.
Example for this error are
pom.ml pm.xl