请问这是什么错误

创建网表时，提示如下：

WARNING:  [DRC0004]  Possible pin type conflict U73,SCL Bidirectional Connected to Output
                    SCHEMATIC1, P28-PowerConn&Monitor  (180.34, 175.26)

ERROR:  [DRC0018]  Pin number is not numeric  Q46,1
                    SCHEMATIC1, P29.CPU_CORE  (139.70, 68.58)

ERROR:  [DRC00031]  Package has same name but different source library. C540 E:\CADENCE\SPB_15.5\TOOLS\CAPTURE\LIBRARY\DISCRETE.OLB/CAP NP
                    SCHEMATIC1, P17.82547.CSA  (307.34, 175.26)

不知道怎么回事，大家能帮帮我吗?