Attributes @ulx, @uly, @lrx, @lryare not valid in the <graphic> element, they should be moved into the <surface> element.
The @facs attribute of the <pb> should be pointing to the @xml:id of the <surface> element (not to <graphic>). This is because, according to the schema, each value in @facs should correspond to the @xml:id attribute of a surface or zone element.
@ulx,@uly,@lrx,@lryare not valid in the<graphic>element, they should be moved into the<surface>element.@facsattribute of the<pb>should be pointing to the@xml:idof the<surface>element (not to<graphic>). This is because, according to the schema, each value in@facsshould correspond to the@xml:idattribute of a surface or zone element.