进行DRC验证时,报出这样的warning:cell name parameter “logo*” for EXTENT CELL operation not locatedcell name parameter “padpladv” for EXTENT CELL operation not located
cell name parameter “padPL*” for EXTENT CELL operation not located等等很多这样的warning。引号内的名字不一样。我想请问下这些warning是什么意思,有什么影响,应该怎么修改?