illegal extension meaning in English

非法扩建

If xsd . exe encounters either of these illegal extensions when generating source code from an xml schema document , it issues the following warning
如果从xml架构文档生成源代码时， xsd . exe遇到上述任何一种非法扩展，它都会发出下面的警告：
To minimize through enforcement action , the nuisances created by street trading either by hawkers or by illegal extensions of shops onto the street area
采取执法行动，尽量减低小贩在街头贩卖和店铺把营业范围非法扩展至街上所造成的滋扰。
To minimize through enforcement action , the nuisances created by street trading either by hawkers or by illegal extensions of shops onto the street area
采取执法行动，尽量减低小贩在街头贩卖和店铺把营业范围非法扩展至街上所造成的滋扰。