在用orcad进行DRC检查时报如下错误，请问这是咋了，那位大侠帮帮忙，谢谢了！ ERROR: [DRC0024] The package contains different types of parts U1B F:\URANUS\WORKS\PCB\GIS_DO\GIS_DO.DSN/EPM570_11
SCHEMATIC1, Cpld (63.50, 33.02)
ERROR: [DRC0024] The package contains different types of parts U1A F:\URANUS\WORKS\PCB\GIS_DO\GIS_DO.DSN/EPM570_11
SCHEMATIC1, Cpld (223.52, 17.78) | 
